BIOLOGY MIDDLE SCHOOL

One fruit fly is heterozygous for long wings, and another fruit fly is homozygous for short wings. Long wings are dominant to short wings. Using a Punnett square, find out what percent of the offspring are expected to have short wings.

Answers

Answer 1
Answer:

One dominant and one recessive progeny result from a cross between heterozygous dominant and homozygous recessive genes.

What is homozygous and heterozygous?

When two identical copies of a gene are present, you are said to be homozygous for that gene. It contrasts with a heterozygous genotype, in which the alleles are distinct.

The parent fly with black, long wings is heterozygous for wing length, while the parent fly with gray, short wings is heterozygous for body color.

The dominant V allele in fruit flies results in extended wings, but the recessive V allele results in vestigial wings.

As a result, insects with the genotypes VV or Vv will have long wings, while those with the genotype vv will just have vestiges of wings.

Therefore, 50% percent of the offspring are expected to have short wings.

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Answer 2
Answer: 50% are expected to have short wings.

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Answers

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What is Ecological succession?

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Therefore, the correct option is B.

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Answer: B.

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