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Kisachek [45]
2 years ago
12

After Darwin proposed his ideas about natural selection as a mechanism for evolution was generally considered a theory. Why do w

e now refer to it as a theory?
Biology
1 answer:
djyliett [7]2 years ago
8 0
Because it's still not a fact. We don't know that that is what definitely happened so a theory is widely accepted but it's not absolute
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In certain mice, long tails (T) are dominant over short tails (t). If 2 hybrid mice mate, what will the outcome be?
yuradex [85]

Answer:

3 long tails : 1 short tail

Explanation:

This question involves a single gene coding for tail length in mice. The allele for long tail (T) is dominant over the allele for short tail (t). This means that an heterozygous mice will possess the long tail length.

According to this question, in a cross between two hybrid or heterozygote mice i.e. Tt × Tt, the following gametes will be produced by each parent:

Tt - T and t

Using these gametes in a punnet square (see attached image), the following will be produced: TT, Tt, Tt and tt.

Offsprings with genotype TT, Tt and Tt will have a LONG TAIL while genotype  tt will have a SHORT TAIL. Hence, the phenotypic ratio will be 3 long tails : 1 short tail.

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Explanation:

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What tissue type makes up the dermis of the skin? elastic cartilage regular connective tissue skeletal muscle irregular connecti
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irregular connective tissue

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