Answer:
This question lacks options, the options are:
A. All 270 tall plants were heterozygous
B. All 270 tall plants were homzygous.
C. Only 90 plants were homzygous.
D. All dwarf plants were homzygous.
The answer is D.
Explanation:
This question involves a single gene coding for height in pea plants. The allele for tallness (T) is dominant over that of dwarfness (t). This means that a dwarf plant can only be homzygous recessive (tt) while a tall plant can either be homzygous (TT) or heterozygous (Tt).
According to the question, two tall heterozygous pea plants were crossed i.e. Tt × Tt. Based on this cross, a phenotypic ratio of 3:1 is expected, which is in accordance with the 270 tall plants and 90 dwarf plants (360 total) that was obtained in the cross. Since dwarfism in pea plants is a recessive trait, this means that all the dwarf plants produced in this cross (90) were homzygous (tt).
The expected genotype resulting from the cross was that all dwarf plants were purebreed.
So, according to the given information, there is a cross between Tt × Tt. A phenotypic ratio of 3:1 is desired, which is in accord with the 270 tall plants and 90 dwarf plants (360 total) that were got in the cross.
Since dwarfism in pea plants is a different feature, this means that all the dwarf plants produced in this cross (90) were (tt).
What are the 3 principles of Mendelian genetics?
The fundamental principles of Mendelian inheritance by Mendel's three laws:
The Law of Independent Assortment,Law of Dominance, andLaw of SegregationThus, the cross was that all dwarf plants were purebreed.
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What is the relationship between DNA, a gene, and a chromosome?
A. A chromosome contains hundreds of genes, which are composed of DNA
B. A chromosome contains hundreds of genes, which are composed of protein
C. A gene contains hundreds of chromosomes, which are composed of protein
D. A gene contains hundreds of chromosomes, which are composed of DNA
Answer:
It is letter A, a chromosome contains hundreds of Gene's, which are composed of DNA.
Name the structures of the central nervous system and the peripheral nervous system and describe their functions.
Identify the complementary strand of DNA with the sequence: ACC GTA TCG
1.) GTT ACG CTA
2.) ACC GTA TCG
3.) CAA TGC GAT
4.) TGG CAT AGC
Answer:
4
Explanation:
because it's there opposite letter
Answer:
4 b.c a is equal with t and g is equal to c
What is the mean protein in bone
Answer: Made mostly of collagen, bone is living, growing tissue. Collagen is a protein that provides a soft framework, and calcium phosphate is a mineral that adds strength and hardens the framework. This combination of collagen and calcium makes bone strong and flexible enough to withstand stress.
. Luraine, who has blood type o, has a child with blood type B. She claims Will is the
child's father, but he denies this. Will's blood type is AB. How could blood typing
explain that will could, or could not be the father of this child?
If the mother's blood group is O and the father's blood group is AB, then the child's blood group could be A or B. Hence, Will could be his father.
What is blood group?Blood types are based on the presence or absence of specific antigens, which are chemicals that, if they are foreign to the body, may cause an immunological reaction.
Safe blood transfusions depend on proper blood typing and cross-matching since some antigens can cause a patient's immune system to attack the transfused blood.
In case of an emergency, it is crucial to know your blood type. You'll need compatible blood if you ever find yourself in a position where you need a blood transfusion. Blood cells can cluster together due to an incompatible blood group, which can be lethal.
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Science- bbbbbbbbbbb
Gerard lives in a tropical region where the average
annual temperature is 77°F and the average annual
rainfall is more than 100 inches a year. He surveys 25
people in his neighborhood about items they regularly
use and records the data into a table.
Product Number of People
Umbrellas
25
Insulated gloves
22
Raincoats
19
Rubber boots
13
Hats
8
For which products has Gerard most likely recorded
the data with an error?
O umbrellas
O insulated gloves
raincoats
O rubber boots
Earth's atmosphere is made of different gases that can affect the Earth's Climate in different ways
True/False
Explain in full details.
Answer:
True. The atmosphere protects life on earth by shielding it from incoming ultraviolet (UV) radiation, keeping the planet warm through insulation, and preventing extremes between day and night temperatures.Greenhouse gases, such as carbon dioxide, methane, nitrous oxide, and certain synthetic chemicals, trap some of the Earth's outgoing energy, thus retaining heat in the atmosphere.
The statement is true.
Effect of atmosphere on climateAtmosphere of earth contains oxygen which we use for breathing. The gases present in the atmosphere such as ozone protects us from harmful ultraviolet solar radiation.
It creates the pressure without which liquid water couldn't exist on our planet's surface. The greenhouse gases warms our planet and keeps temperatures habitable for our living Earth.
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The budding of clathrin-coated vesicles from eukaryotic plasma membrane fragments can be observed when adaptations, clathrin, and dynamin-GTP are added to the membrane preparation. What would you observe if you omitted (A) adaptations, (B) clathrin, or (C) dynamin
Answer:
Explanation:
Adaptins:
Adaptor proteins, which attach the clathrin to the membrane, are required for clathrin-coated vesicles to form. Clathrin cages form in solution at strong clathrin concentrations and under the right ionic environments and parameters, but they are empty hollow shells without membranes or other proteins. The data for clathrin baskets are included in the clathrin molecules themselves, as shown by the self-assembly of clathrin into baskets. Clathrin coat cannot form or build up without adjusting to the membrane it is attached to.
Clathrin:
Adaptins bind and act synergistically to specific receptors without clathrin, but no vesicles or clathrin are formed. There exists coated pits formations, but no clathrin coat.
Dynamin:
Clathrin-coated pits can develop and progress toward vesicle formation in the exclusion of dynamin, but the final step, known as membrane fusion, is inhibited. Consequently, in the exclusion of dynamin, strongly invaginated covered pits will be noticed. As a result, vesicles are unable to pinch the membrane.
Suppose plasma membrane fragments were prokaryotic cells, there would be no endocytosis and hence no adaptin or coatings. Endocytosis is not performed by prokaryotic cells. There are no receptors with adequate cytosolic tails in a prokaryotic cell that might facilitate the binding to adaptor proteins. As a result. no clathrin-coated vesicles will develop.
Albinism is an autosomal recessive condition. Which circle graph shows the genotype probability when an albino female mates with a male that is heterozygous for the albinism trait?
Fluorescent FM dyes partition reversibly into biological membranes without penetrating through them. Suppose that you have neurons cultured in a dish, and you incubate them with an FM dye for a period of time before washing the cells with excess medium to remove the dye.a)You find that if you stimulate the neurons to trigger action potentials during incubation with the dye, the synaptic regions of the neurons remain fluorescent after the wash. Propose an explanation for this effect.b)After you have generated fluorescent synaptic regions by this procedure, suppose that you trigger further action potentials while continuing to wash with excess medium. Would you expect the synaptic regions to lose fluorescence
Answer:
a) Emission observed is due to emission of synaptic vessels
b) Yes
Explanation:
a) Proposing an explanation
The emission observed ( the synaptic regions of the neurons remaining fluorescent ) is due to the emission on the synaptic vessels given that FM dyes have lipid-sensitive emission which can be loaded into a recycled synaptic vesicle
b)
The synaptic regions will lose fluorescence when you continue to wash with excess medium, also the more action potentials triggered the more observed emission. hence the increase in the loss of fluorescence is due to the fact that the emissions are not permanent
Most food chains end with a top predator. Which of these is the BEST definition of a top predator?
Answer:
Top predator is a predator at the top of a food chain without natural predators.
Answer:
Hello There!!
Explanation:
A top predator is a predator which is at the top of the food chain and eats other consumers.
hope this helps,have a great day!!
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Gametes contain how many copies of each chromosome?
Answer:
Explanation:
each gamate carries 22 ordinary chromosome and one sex chromosome,altogether they carry 23 chromosome each.
The science behind climate change states that human processes may be overwhelming nature's ability to balance and redistribute which element? A. sulfur B. carbon C. uranium 65 D. ammonia
Answer:
B- carbon
Explanation:
carbon is what we break out and yeh
The human processes may be overwhelming the nature's ability to balance and redistribute carbon element in the environment. Thus, the correct option is B.
What are Climate changes?Climate change are the long-term shifts in the temperature and weather patterns in an ecosystem. These shifts in the weather conditions may be natural or artificial, but since the 1800s, many human activities have been found to be the main driving force of the climate change, primarily due to the burning of fossil fuels such as coal, oil, and gas, which produces heat-trapping gases such as carbon dioxide, chlorofluoro carbons, etc.
Most of the human processes are found to be overwhelming the nature's ability to balance and redistribute carbon element in nature.
Therefore, the correct option is B.
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Recessive traits are
A.Traits that everyone wants
B. Traits that are shown over other traits
C. Traits that are hidden by other traits
D. Traits that no one wants
What is an element/compound that is
cycled through ecosystem?
Answer:
Nitrogen, carbon, and phosphorus are just a few
Explanation:
What structures in the Ammocoetes (lamprey larvae) and adult lamprey are homologous to the gill bars and jaws of the shark (dogfish
Answer: The homologous structure between shark and lamprey is that:
--> Both are fishes and
--> possess skeletons that are at least partially made of cartilage.
Explanation:
The class PISCES belongs one of the five classes of vertebrate with the following features:
--> it is cold- blooded animal.
--> it's body is covered with scales and a layer of slime.
--> it had fins
--> it carries out gaseous exchange by hills.
--> it has a well developed sense of smell
--> it had a two - chambered heart.
The HOMOLOGOUS structures are those features that are present in the lamprey that are also seen in the shark. This can simply be referred to as the similarities between the lamprey and the shark. These similarities include:
--> Both are fishes and
--> both possess skeletons that are at least partially made of cartilage. This is a feature that is lacking in bony fishes such as Tilapia and carp.
need help plz
Hand-cranked flashlights transform mechanical energy into other forms of energy. Which energy transformations are useful, and which are not? Explain why most hand-cranked flashlights are made with LEDs.
Answer:
some kinetic energy to electric energy are good. for a hand cranked flash light it takes a lot of physical energy to get the light on for a large amount of time. LEDs are used because they are bright with even a little energy. solar/light energy is very useful aswell
Answer:some kinetic energy to electric energy are good. for a hand cranked flash light it takes a lot of physical energy to get the light on for a large amount of time. LEDs are used because they are bright with even a little energy. solar/light energy is very useful aswell
Explanation
There was a study made in a UK forest in where it was calculated the population of red squirrels and grey squirrels. There was a clear competition and by the end of the study, there were only grey squirrels. How the decline of the red squirrel population might affect its native ecosystem??
Answer:
Predators might die out
Explanation:
Since grey squirrels can Camouflage... predators may not eat because the red squirrels die out. And grey squirrels may reproduce more because there is no competition anymore.
In which of the following plants stomata are not found in the dominant stage of the life cycle ??
1) sphagnum
2)Dryopteris
3) Lycopodium
4) Zamia
Answer:
The ans is 1)sphagnum
Explanation:
Hope it helps you bro☺️✌️
Answer:
the first one
Explanation:
State how a gas produced by photosynthesis is recycled in nature
Answer:
Oxygen cycle, oxygen the by product of photosynthesis is inhaled by heterotrophs which aids in cellular respiration and other internal processes and then exhales carbon dioxide.
Explanation:
In like manner, carbon dioxide passes from blood to the alveoli and exhaled after.
What adaptations do desert animals have that help them survive the hot dry desert?
Answer:
animals also have to cope i the desert, using adaptations such as being nocturnal or living under ground to survive. camels often live in deserts that are hot and dry during the day, coping with wind-blown sand and cold at night. slit-like nostrils and two rowa of eyelashes to help keep the sand out of their eyes.
Which statement about the cells of organisms is accurate?
A. plants are unicellular organisms that have specialized function
B. all organisms are multicellular and carry out similar functions of life
C. The single cell of a unicellular organism carries out all functions of life
D. The single cell of a unicellular organism can have specialized functions
Answer:
B
Explanation:
Plants, fungi, and animals are multicellular organisms, so the answer is B.
Answer:
B
Explanation:
What is the main protein in bone
Answer:
Collagen
Explanation:
cardiovascular anatomy describe the operation of the heart and vessels. true\false
Explanation:
true
I hope this helps u
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Answer:
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Alleles are described as ____________________. homologous chromosomes homologous chromosomes alternate versions of a gene alternate versions of a gene alternate phenotypes alternate phenotypes environmental factors that affect gene expression
Answer:
The correct answer is - alternate versions of a gene.
Explanation:
In a cell, if there are two copies of each chromosome, these are called homologous chromosomes, one come from the father and the other comes from the mother, which helps in promoting the variety and stability of a species.
Different or alternate versions of genes are possible that can result in two phenotypes for the same trait, these alternate versions called alleles. Alleles can be dominant and recessive.
What is food hygeine
Answer:
Food hygiene is an essential aspect of food safety. It refers to the processes that directly involve food – including storage, preparation, and cooking. Good practices in these areas ensure that people receive food that's safe and as described.
how do allosteric enzymes activate and inhibit chemical reactions in a living organism?
Answer:
Allosteric activators bind to locations on an enzyme away from the active site, inducing a conformational change that increases the affinity of the enzyme's active site(s) for its substrate(s). Allosteric inhibitors modify the enzyme's active site so that substrate binding is reduced or prevented.
Explanation:
thank me later
PLS HELP ME
Which type of reproduction provides organisms with the following disadvantages? Organisms must grow until mature enough to produce sex cells. Finding a mate uses energy and takes time.
A. Asexual Reproduction
B.Sexual Reproduction
Answer:
Sexual Reproduction is the answer
Beatrice’s science teacher gave her an unknown substance to identify based on its properties. After a few tests, Beatrice listed her observations in a chart.
reflects light very well
warms up in my hand
flattens out when hit with a hammer
conducts electricity
Which kind of substance does Melinda have?
A. metalloid
B. nonmetal
C. metal
D. noble gas