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motikmotik
2 years ago
6

Which nitrogen base in rna is not part of dna?

Biology
1 answer:
Wewaii [24]2 years ago
4 0
The uracil is present in RNA instead of Thymine
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Based on the weather map above, which statement is true based on the weather map?
alisha [4.7K]

Answer:

A warm front is moving towards South Carolina bringing rainy conditions

Explanation:

From this weather map, we can see that South Carolina will soon be under the influence of a warm front. The warm front is moving towards this state, and it is coming from southeastern direction, thus it has been formed over warm waters. Because it has been formed over warm waters, this front is warm and very moist which will result in lot of rainfall once it comes upon a natural barrier to cause condensation, and the Appalachian Mountains will do just that, thus South Carolina will receive a lot of rainfall.

8 0
3 years ago
In humans, Rh-positive individuals have the Rh antigen on their red blood cells, while Rh-negative individuals do not. If the Rh
bixtya [17]

Answer: 60%

Explanation:

In population genetics, the Hardy-Weinberg Principle states that the genetic composition of a population remains in equilibrium as long as no natural selection or other factors are active and no mutations occur.

The frequencies of the genotypes of an individual locus will be set to a particular equilibrium value.<u> It also specifies that these equilibrium frequencies can be represented as a simple function of the allelic frequencies at that locus</u>. In the simplest case, with a locus with two alleles A and a, with allele frequencies of p and q respectively, the principle predicts that <u>the genotypic frequency for the dominant homozygous AA is p^2, that of the heterozygous Aa is 2pq and that of the recessive homozygous aa, is q^2. The allele frequency of a is represented as p and the frequency of recessive allele is q.</u>

The three genotypes AA : Aa : aa appear in a ratio p² : 2pq : q². If we add them up, we get the unit:

p^2 + 2pq + q^2 = (p + q)^2 = 1  

And p + q = 1

<u>Rh-positive genotypes are represented as AA (homozygous dominant) or Aa (heterozygous) since the presence of a single dominant allele is sufficient to express the phenotype. While Rh-negative genotypes are represented as aa. </u>

If 84% of the population is Rh-positive, that means that this percentage includes all those who are AA and Aa. Then 16% are aa.

F(aa)=q^2=0.16

then F(a)=q=0.4

And since p + q = 1, p + 0.4 = 1, then p is 0.6

We can also calculate the rest, then F(AA)=p^2= 0.36

So F(Aa)= 2pq = 2 x 0.6 x 0.4 = 0.48

Notice that 0.36 + 0.16 + 0.48 = 1

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2 years ago
10. In the process of photosynthesis, the ____
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The Answer is the C.
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What important molecules does the nucleus contain?
fredd [130]
The nucleus contains the <u>DNA</u> (Deoxyribosenucleic Acid). It codes for all the hereditary characteristics an organism has and it is packaged into chromosomes within the nucleus.
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Which organism on the cladogram do not have four limps?
KengaRu [80]

Answer:

bird

Explanation:

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