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Lorico [155]
3 years ago
12

the process of dna replication requires that each of the parental dna strands be used as a ___________________ to produce a dupl

icate of the opposing strand.
Biology
1 answer:
Dovator [93]3 years ago
6 0

Answer:

cynical cubby cucumber Bobby cici

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Compare heter0zygous genotype and hom0zygous genotype
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heterogeneous genotype have two different Allels at a particular gene locus while a homogeneous have the same

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Maps are examples of ____ models that people might use everyday.
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Maps are examples of physical models
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Sickle-cell trait is caused by a single defective allele, but sickle-cell disease only occurs in individuals that are homozygous
Pavel [41]

Answer:

6,25%

Explanation:

Considering that the couple has a trait of sickle cell anemia, we know that both are heterozygous for the disease (Aa) and therefore can have children with the following genotypes:

Parents: Aa X Aa

Children: AA(A x A), Aa(A x a), Aa (a x A) and aa(a x a)

Knowing that sickle cell anemia only occurs in homozygous individuals, the probability for children to have the disease according to each crossing is:

A x A = 1/4 = 25%

A x a = 1/4 = 25%

a x A = 1/4 = 25%

a x a = 1/4 = 25%

The probability of forming each homozygous child (aa) is 1/4 or 25%. Since they are two children, the probability of both having sickle cell anemia is calculated by multiplying the probability of each, so:

1/4 × 1/4 = 1/16 = 0.0625 = 6.25%

It is concluded that the probability of a heterozygous couple for sickle cell anemia to have two children with the disease is 6.25%.

6 0
3 years ago
________ Is the nitrogen base found only in RNA
Savatey [412]

Answer:

Uracil

Explanation:

3 0
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