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Akimi4 [234]
3 years ago
7

What is the role of nucleotides in DNA structure?

Biology
1 answer:
lana66690 [7]3 years ago
6 0


Nucleotides help form the backbone of DNA and RNA.

Nucleotides are subunits that are linked to form nucleic acids. All nucleotides are composed of three parts: a five carbon sugar, a phosphate and a nitrogen - rich structure called a nitrogenous base.

It is the phosphate group that that makes the nucleotide so critical in DNA structure. By linking the phosphate of one nucleotide to carbon 3 of the sugar in the neighboring nucleotide, a DNA polymer is made. The repeating pattern of phosphate, sugar, then phosphate again is commonly referred to as the backbone of the DNA or RNA molecule.


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In chickens, comb shape is determined by genes at two loci (R, r and P, p). A walnut comb is produced when at least one dominant
mariarad [96]

Answer:

in the obtained options, there is no dominant gene for the crossed pairs, therefore, no answer would be correct, however, when assigning a dominant character to the P gene, the correct answer would be:

E. Rr pp *rrPp

Explanation:

According to the information obtained we deduce:

Comb shape is produced by R and P

Comb of walnuts with an R or a P

Pink comb: 1 dominant P and R at the first locus and 2 recessive at the next locus

Pea comb: 2 recessive at the start and one dominant in the next position

1 single comb: 2 recessive at both loci

Rr pp × rr Pp will produce from the interbreeding: 2 walnuts, 1 single and 1 pea offspring.

We deduce that for the pink comb the genotype is: Rrpp

and for the pea comb it is rrPp

Rr pp × rr Pp generates crosslinks containing RrPp, rrPp, rrpp as children in a 2: 1: 1 ratio.

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Regulation of isoleucine synthesis is an example of feedback inhibition of an anabolic pathway. With that in mind, explain how A
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Answer & Explanation:

Feedback is a form of regulation where the main product of one reaction, can also inhibit it. It can work in several ways, mainly there's a receptor that, somehow, measures the presence of a determined molecule, in this case, ATP. These receptors can also be involved in the metabolic process and when there's an excess of ATP, the enzymes are inhibited, maybe with an allosteric type of inhibition.

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What level of organization is represented by each image? A: B: C:
Ulleksa [173]
Answer: Tissue
A tissue is the level of organization that is shown in the image. A tissue is a group of cell, found in plants, animals and humans. The cells in the tissue are similar in structure and function. The study of tissues in the living organisms is called as histology. An organ is formed when multiple tissues are grouped togethe

Read more on Brainly.com - brainly.com/question/11761920#readmore
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2 years ago
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Since life on Earth predates photosynthesis, the exploration of this deep-water environment that lacks any source of light could provide information on what those life forms looked like.

Explanation:

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When the neurotransmitter GABA binds to its receptor's which way does CI chloride move in what is the consequences of GABA bindi
diamong [38]

Answer:

towards the inside hyperpolarising the neuron

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