L 4.5.2 Test (CST): Computer-Scored Unit Test
Question 20 of 25
What is a fixed allele?
A. An allele that is found on many genes
B. An allele present in all members of a population
Ο Ο
C. An allele that formed by adaptive radiation
O D. An allele that mutates with each generation
SUBMIT
PLEASE HELP

Answers

Answer 1

Answer:

The correct answer is - B. An allele present in all members of a population.

Explanation:

A homzygous variant or allele for all the members of a particular gene is a fixed gene and is the only variant that presents in all the population for that gene.

It takes place when there is all other alleles become extinct and only one remains. The allele frequency of this allele is always 1.00 in the population which means only one allele is present on the locus.


Related Questions

Which is a feature of DNA that could allow you to distinguish between a DNA sequence that is protein coding and a DNA sequence that is not

Answers

Answer:

Protein-coding sequences are single stranded; others sequences are double stranded.

Not really sure about this answer so can someone give me the correct one​

Answers

It is the third circle. :)

Assess It! #4 Which is the correct combination for the photosynthesis equation? (not balanced) A. H2O + -> CO2 + O2
B. O2+H2O -> sugar +energy
C. CO2 + H2O +☺ -> Sugar+ energy
D. ☺ + H2O -> H2O+ sugar ​

Answers

The answer to this assess it equation is exactly 20 because of the H3p
I think the answer is C

Match each of the following terms with its description. 1. Arteries a) Tiny, thin-walled blood vessels that connect the smaller arteries to venules 3. Veins 4. Venules 5. Arterioles 2. Capillaries b) Thin-walled blood vessels that are less elastic than arteries c) Thick-walled, muscular, flexible tubes that carry oxygenated blood away from the heart to the arterioles d) Small arteries that deliver blood to capillaries e) Small vessels that connect the capillaries to the veins

Answers

Answer:

Arterioles - D

Arteries - C

Veins - B

Capillaries - A

Venules - E

Explanation:

This question is describing the blood vessels that make up the circulatory system. The blood vessels with their accurate description are as follows:

- ARTERIES: Arteries are the most elastic and thick-walled blood vessels that functions to carry blood away from the heart using great pressure. Arteries are muscular, flexible tubes that carry oxygenated blood away from the heart to the arterioles.

- VEINS: Veins are blood vessels that carry deoxygenated blood back to the heart. Veins have a thin wall and are less elastic in comparison with arteries.

- CAPILLARIES: Capillaries are smallest blood vessels designated to connect the smaller arteries or arterioles to venules. They are also thin-walled.

- ARTERIOLES: Arterioles are small arteries or branches of an artery that connects the arteries to capillaries. Arterioles deliver blood to capillaries.

- VENULES: Venules are tiny veins or branches of a vein that connects the veins to the capillaries. Venules deliver blood from capillaries to veins.

describe the life cycle of a bean beetle​

Answers

Answer:

The larvae of this species feed and develop exclusively on the seed of legumes (Fabaceae) hence the name bean beetle. The adults do not require food or water and spend their limited lifespan (1–2 weeks) mating and laying eggs on beans. ... Pupation is the complete metamorphosis of the larval maggot to a winged adult.

Explanation:

hope it's helpful

Pupation is the complete metamorphosis of the larval maggot to a winged adult. The adult that results from pupation chews through the seed coat and emerges from the bean. ... The elapsed time from newly laid eggs to the emergence of adult beetles varies between bean beetle strains and environmental conditions.

An object at ___ stays at ____ or an object that is ____ at a _____ in a straight _____ keeps moving at that _____ unless another _______ acts on it.

Answers

Answer:

an object at rest stays at rest or an object that is moving at a velocity in a straight line keeps moving at that velocity unless another force acts on it

Why does the kidney need 1 million nephrons instead of one whole unit to carry out its function

Answers

The kidneys are a pair of bean-shaped organs on either side of your spine, below your ribs and behind your belly. Each kidney is about 4 or 5 inches long, roughly the size of a large fist. The kidneys' job is to filter your blood.

Explain why DNA Sequencing proves that all species have a common ancestor

Answers

Answer:

Below

Explanation:

The reason why we can conclude that all species have common ancerstory is that all the species have several same base pairs. Here are a few listed:

A-G-G-C

As well as this later on:

C-C-A-A-C-C

Because this strand of DNA has several common base pairs, we can conldude that the species have common ancestory that made it this way.

Hope this helps!

stions
Describe what a muscle fiber looks like and what it
can do.

Answers

Answer:

Smooth muscle fibers have an oblong shape, much like a football. They’re also thousands of times shorter than skeletal muscle fibers. Similar to skeletal muscles, cardiac muscles are striated. They’re only found in the heart. Cardiac muscle fibers have some unique features.

Explanation:

Un instructor desea preparar un experimento sobre movimiento armónico simple. Sólo dispone de una masa de 2 kg pero tiene una colección de resortes. ¿Qué constante elástica, en N/m, debe elegir para tener un período de 2 s?

Answers

Answer:

Constante de resorte, k = 19.745 N/m

Explanation:

Dados los siguientes datos;

Masa, m = 2 kg

Periodo, T = 2 segundos

Para encontrar la constante del resorte, k;

[tex] Period, \; T = 2 \pi \sqrt {\frac {m}{k}} [/tex]

Dónde;

T es el período. m es la masa del objeto. k es la constante del resorte.

Haciendo k el tema de la fórmula, tenemos;

[tex] k = \frac {(2 \pi )^{2}m}{T^{2}} [/tex]

Sustituyendo en la fórmula, tenemos;

[tex] k = \frac {(2 * 3.142)^{2} * 2}{2^{2}} [/tex]

[tex] k = \frac {6.284^{2} * 2}{4} [/tex]

[tex] k = \frac {39.49 * 2}{4} [/tex]

[tex] k = \frac {78.98}{4} [/tex]

Constante de resorte, k = 19.745 N/m

Guys help me I know you guys are smart so please help me:)

Answers

Answer:

jzjzjzzzzzzzzzzzzzzzzzzzz

what does a root hair cell do​

Answers

Answer:

Root hair cells (black arrow pointing at one of the root hair cells) are single tubular root cells. Their distinctive lateral elongation increases the surface of exchange between the plant's root system and the soil. The main function of root hairs is the uptake of water and nutrients from the rhizosphere.

what animal is the descendant of Gilmoreosaurus

Answers

Answer:

Dinosaurs!

Explanation:

Dinosaurs are the descendants of Gilmoreosaurus.

Applying Concepts Your friend is playing a song on a piano. Whenever your friend hits a certain key, the lamp on top of the piano rattles. Explain why the lamp rattles.

Answers

Answer:

The lamp rattles because close resonant frequency.

Explanation:

The phenomenon of increased amplitude is known as resonance when the frequency of a periodically applied force is equal to or close to the natural frequency of the system it affects. When a resonant frequency oscillating force is applied to a dynamic system, the system oscillates with greater amplitude than when the same force is applied at non-resonant frequencies.

Resonant frequencies or resonance frequencies of the system are frequencies when the response amplitude is at a relative maximum. Due to the storage of vibrational energy, small periodic stresses at a resonance frequency of the system can cause significant amplitude oscillations in the system.

Thereforee, the lamp rattles because close resonant frequency.

The protection and wise use of natural
resources is called?

Answers

Answer:

Hey mate......

Explanation:

This is ur answer......

The wise use of our natural resources is called conservation. The choice not to use our natural resources is called preservation.

Hope it helps!

Brainliest pls!

Follow me! :)

helppppppppppppp im stuck

Answers

Answer:

Ecosystem

Explanation:

Ecosystems are the largest organizational level found in one coral reef

Which of the following words would you probably NOT use to describe the scientific process?

.control
.organized
.data
.disorganized

Answers

i believe it is “disorganized,” but i’m not completely sure; it sounds normal to have organized data

The words that would probably not used to describe the scientific process is disorganized, i.e., option D.

What is scientific process?

The scientific method is an epistemological method of acquiring knowledge that has been used in science since at least the 17th century.

The words that would probably not used to describe the scientific process is disorganized.

Thus, the correct option is D.

For more details regarding scientific process, visit:

https://brainly.com/question/16172865

#SPJ2

True or False; Carbohydrates and Lipids are organic, contain CHO and are both forms of energy

Answers

This must be true i guess

¿Cómo defines a una Célula Haploide?

Answers

Answer:

La mitad de cromosomas.

Explicación:

Las células haploides se refieren a aquellas células que tienen la mitad de cromosomas. Estas células haploides se forman debido a la división celular de la meiosis. En la división celular de la meiosis, una célula madre se divide en cuatro células hijas que tienen la mitad de cromosomas. Estas células haploides están presentes en los espermatozoides de los gametos masculinos y femeninos, que se fusionaron formando células diploides que tienen el doble de cromosomas. El cigoto formado debido a la fusión de espermatozoides y óvulos son de naturaleza diploide.

The _____ of a species is usually the result of predation, competition, and other types of interaction between species.

Answers

Answer: Realized Niche

Explanation:

Realized niche is also referred to as Post Competitive niche and can be defined as a thriving environmental area created by a group of organisms to survive from an exsisting Faundermental  niche where interactions (predation, competition, light, water,food) with other organisms were limited and competed for.  

For example. In a tree( Faundermental niche) which houses different species of birds, In order to survive, each specie of the birds will create a realized niche so as to survive from predation, competition, light etc which the whole tree provides.

What would be the complimentary side of this DNA molecule?
TAG CCA TTG CGT GCC TGG CAAT

Answers

No clue. So sorry… I need points….

Can someone help me pls

Answers

Answer:

respiratory and circulatory digestive and excretorydigestive and circulatory nervous and muscular
Taking in gasses and moving them through the body is respiratory and circulatory

Processing nutrients and expelling waste from the body is digestive and excretory
Taking in nutrients and moving them through the body is digestive and circulatory

Processing and responding sensory informations is nervous and muscular

For the following nitrogen base sequence, write the complimentary sequence on the line provided.
A – T – C – C – T – A – G – A – A
_________________________

Answers

Answer:

TAGGATCTT

Explanation:

a - t

c - g

List the three items that must be included in the definition of mass extinction

Answers

Ordovician-silurian Extinction: 440 million years ago.
Devonian Extinction: 365 million years ago.
Permian-triassic Extinction: 250 million years ago.

"Draw a pedigree for hitchhiker’s thumb. Your pedigree should cover at least two generations and include both dominant and recessive forms of the trait. Label the pedigree with genotypes, using the letter H to represent the dominant allele for the trait and the letter h to represent the recessive allele."


I'm confused on the part about having two generations. How do I set up the pedigree?

Answers

Answer and Explanation:

First, you need to know how to interpret a pedigree representation.

Family members

→ Individuals are represented with geometrical figures.

→ Males are squares

→ Females are circles

Trait/Phenotype

→ Healthy/normal/not affected  individuals are represented with empty figures

→ Affected/mutated individuals are represented with solid black figures

Generations

→ Each file is represented with a roman number, indicating the Generation.

 

Now, what we need to do is to draw a pedigree for a hitchhiker’s thumb. We know that this is an autosomal dominant trait, which we will represent with an H. No hitchhiker's thumb is the recessive trait, and it will be represented with an h.

Our pedigree should cover at least two generations and include both dominant and recessive forms of the trait.    

We can cross two heterozygous individuals, Hh, who are the first generation in our pedigree. This cross will result in a woman and a man with No hitchhiker's thumb, another man with a hitchhiker's thumb, HH, and another woman with a hitchhiker's thumb, Hh. These individuals will represent the second generation in the pedigree. Finally, we can cross the man with No hitchhiker's thumb, hh, with a woman who does not have a hitchhiker's thumb either, hh. And the woman with a hitchhiker's thumb, Hh, with a man with a hitchhiker's thumb, HH. The result of these crosses will be the third generation.

The representation would be like following,

I → First-generation: First cross

Man Hh (1)  Woman Hh (2)

II → Second-Generation: F1 and second crosses

Man hh (3)  x    Woman hh (4)Woman hh (5)Man HH (6)Woman Hh  (7) x   Man HH (8)

III → Third-Generation:

A boy (9) and a girl (10) hhA girl (11) HH

You will find this pedigree in the attached files. In this example, we included three generations. The first one belongs to the grandparents, the second one to parents, aunts/uncles, and the third one to grandchildren.  

If you draw another pedigree, remember to include

the figures representing males and females, color and H/h representing the phenotype, Roman numbers representing the generations, and optional, numbers naming each member.

Which is the main material in a solar cell?
A. carbon
B. phosphorus
C. silicon
D. boron

Answers

Answer:

C.Silicon

Explanation:

By far, the most prevalent bulk material for solar cells is crystalline silicon (c-Si), also known as "solar grade silicon". Bulk silicon is separated into multiple categories according to crystallinity and crystal size in the resulting ingot, ribbon or water.

Answer:

C. silicon is the main material in a solar cell .

hope it is helpful to you

If you conducted the analysis portion of Experiment 2, you calculated
the rate at which the percentage of fish with a complete pelvis
decreased in that ancient lake. Do you think the same rate of change
would apply to modern fish populations?

Answers

Answer:

ibk- xuqe- wup

only show type person come

Why do you think leaves have stomata on their underside only? Explain.

Answers

The stomata must be open during the daylight hours to let oxygen and carbon dioxide pass through. While they are open, water vapor escapes into the atmosphere (transpiration). ... Transpiration is the loss of water through stomata, so, more stomata are found on the lower surface to prevent excessive loss of water.

In a lotus plant, stomata is found on the upper epidermis of the leaf.

Stomata are responsible for the exchange of gas with the surrounding atmosphere of the leaf. Their guard cells stay taut during the day to keep the stoma open.

Guard cells can only stay open if they are saturated with a certain quantity of water.

From this information we can infer that stomata are typically found on the lower epidermis to prevent water damage when it rains.

The rain would not only cover the openings, it would also ruin the osmotic balance of the guard cells causing inefficiency and damage to the cycle of gaseous exchange.

Natural selection probably selected against such plants giving rise to those with stomata on the underside.

Which answer best illustrates evolution by natural selection?
(2.9 points)
A. Ancestors' legs grew longer from climbing to escape predators.
OB. Ancestors that had longer legs could not produce more offspring.
O c. Ancestors wanted longer legs to escape predators and therefore grew longer legs
OD. Ancestors with longer legs escaped predators more easily and lived to produce more offspring.

Answers

Answer: A

i know this because i have taken this before

A __________ is an example of a signal molecule that can bind to an intracellular receptor and thereby cause a gene to be turned on or off. a protein b glyceride c nucleic acid d steroid e carbohydrate

Answers

Answer:

D. steroid

Explanation:

Intracellular receptors are a type of receptors located inside the cell, specifically in the cytoplasm or nucleus. When intracellular receptors are activated by ligands called SIGNALLING MOLECULES, they change shape and regulate genetic expression in the nucleus i.e. they induce turning on and off in a gene.

However, signalling molecules that activate intracellular receptors are usually hydrophobic hormones because they need to easily diffuse through the cell membrane and bind to the receptors located internally. Example of these hydrophobic signal molecules are STEROIDS.

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Describe the steps you would take to sketch the graph p(x)=2x^(3)+7x^(2)-3x-18 Two shops, Tisco and Azda, sell the same brand of baked beans with the following deals.Calculate the price per 20 items.Write down which shop is the best value in the comment box.Tisco 5 for 1.80 Azda 4 for 1.40 I REALLY NEED HELP WITH THIS!!!! I NEVER LEARNED THIS BEFORE!!!!! HEELLLPPPPP!!!!!! you need it on a roller coaster Box A is 12 ounces and cost 1.92 box B is 18 ounces and cost 3.42 which box will give Micah more for her money and by how much? Express 367 as a number in base 5 Need helpNnsndndndnddn Find the slope of the line -3.5 plzzzz help i need u to draw me a cartoon do not do the fish one plzzzzinstructions belowwill give more points Put the following equation of a line into slope-intercept form, simplifying allfractions.X + 5y = -20 An exception to the parol evidence rule allows evidence of oral agreement that merely explains the meaning of written terms without changing the terms. evidence of oral agreements made on contracts that qualify for mandatory arbitration. evidence of oral agreements made on contracts that qualify for court-annexed mediation. evidence of oral agreements made at the time of or prior to a written contract that changes the meaning of written terms. evidence of oral agreements that are designed to favor the party that drafts a contract. Factor problems 9 - 12 by using the difference of squares method.12. x2 + 100A. (x + 10)(x 10)B. (-x + 10)(x 10)C. (x + 10)(x + 10)D. This polynomial cannot be factored by using the difference of squares method.E. (x - 10)(x 10)F. (-x + 10)(-x 10) The diameter of a professional baseball mound is 18 feet. The radius of a little league baseball mound is 5 feet. What is the difference in the areas? A good soccer player can kick the ball up to 25 m/sec. A soccer ball has a mass of 800 grams (0.8 kg). What force must a goalie exert on the ball to bring it to rest in 0.1 sec? A body is found in the woods completely naked. What effect (if any) might this have on algor mortis?1.) Accelerates the process2.) Inhibits the process3.) No effect4.) Reanimation (2b+12) divided by 2 solve M2 + 6m = -8 using quadratic formula?? The discipline that examines, interprets, and analyzes the results of ethnography is calledMultiple choice question.ethnology.statistics.physical anthropology.archaeology. change from active to passive: An earthquake destroyed the town hey! ill give brainliest please help