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frutty [35]
3 years ago
13

Select the correct answer. What are the basic building blocks of DNA and RNA? A. nucleotides B. phosphorous C. proteins D. sugar

Biology
2 answers:
Artist 52 [7]3 years ago
7 0

Nucleotides are the macromolecular building blocks of DNA and RNA. ... The nitrogenous base that makes up the nucleotide can vary between adenine, guanine, cytosine, thymine (in DNA) and uracil (in RNA). Furthermore, the sugar can also vary between deoxyribose in DNA and ribose in RNA.


Hope This Helps ;)

myrzilka [38]3 years ago
6 0

Each RNA nucleotide consists of three parts: a sugar, a phosphate group, and a nitrogen-containing base. The four RNA bases are adenine, uracil, guanine, and cytosine—often referred to as A, U, G, and C. RNA shares three bases in common with DNA: adenine, guanine, and cytosine. Instead of uracil, DNA contains thymine.

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Suppose that the proportion of the white crest alleles (r) is given by w and that of the Red crest allele (R) is given by p. We have that p+w=1. The probability that an individual has 2 r alleles is given by w*w since for each allele position the probability is w. Only these individuals have a White phenotype. Hence, we get that w^2=\frac{1759}{1759+11088}; the right hand side is the proportion of white birds in the total population. Doing the calculations, this yields that w=0.37. From this, we calculate that p=0.63. The possible ways we have heterozygous individuals are the combinations Rr and rR. The probability for each of those is p*w. Thus, the total probability is 2pw. This is equal to 0.466=0.47. This is the fraction of the future population that is going to be heterozygous assuming the conditions of the Handy-Weinberg equilibrium like random reproductive matching etc.
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3 years ago
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PolarNik [594]

Answer:

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Explanation:

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Particle size is essential. Only the small ones can get through the flagellated channels, where they get stuck to the choanocytes and are encapsulated by the cells. If the choanocytes are too small, the particle is transferred to the amibocytes for digestion. These last ones also act as food storages. Excrement products are dragged by a water stream.  

 

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Answer:

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Explanation:

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Answer:

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