I think the apparent weakness that exists in applying this model of nucleic acid structures are; If it was single tetramer of 4 then it would not be able to have the complexity of the linear sequence, and also it could account for significant quantity if there were enough individual tetramers.
DNA molecule is a made up of nucleotides bases, that are linked together in long chains. Each nucleotide is made up of a sugar (deoxyribose sugar), a nitrogenous base, and a phosphate group. The nucleotides bases on one strand of the DNA pairs with the nucleotide on the other strand (adenine pairs with Thyamine and guanine with Cytosine). The secondary structure of the polymer is responsible for the shape that the nucleic acid assumes.
Answer:
It's A) at the top of group 17
Explanation:
Correct on Edge
Answer:
facilitated diffusion
Explanation:
In facilitated diffusion, certain transport proteins of membranes (channels and carriers) serve in transport of the substances across the membrane. The movement of the amino acid occurs down the concentration gradient only. In facilitated diffusion, transport of substances occurs from the region of their higher concentration to that of the lower concentration. It is a passive process. The addition of some other amino acid slows down the transport of the first amino acid due to the saturation effect. All the transport proteins that facilitate the diffusion of amino acids across the membrane become occupied. This slows down the transport of the amino acid.
Answer:
C) 64% AA, 32% Aa, 4% aa
Explanation:
The frequency of dominant allele A is = 80% = 0.8
Since the population is in Hardy-Weinberg equilibrium, p+ q = 1
Here, p= frequency of dominant allele
q = frequency of recessive allele
Given, p= 0.8
So, q = 1-p = 1-0.8= 0.2
Frequency of genotype AA = p2 = 0.8 x 0.8 = 0.64 = 64%
Frequency of genotype aa = q2 = 0.2 x 0.2 = 0.04 = 4%
Frequency of genotype Aa = 2pq = 2 x 0.8 x 0.2 = 0.32 = 32%
