Answer: The correct answer is- A) They will all be blue.
As per the information given in the question, blue color (B) is dominant trait in butterflies over the yellow color (b), which is a recessive trait.
As we know that dominant trait always masks the expression of recessive trait.
The possible genotypes for blue color butterfly are- Bb (heterozygous dominant) and BB (homozygous dominant) whereas for yellow color butterfly is bb (homozygous recessive).
Genotypes of the parents are - BB (which will produce gametes, B and B) and bb (which will produce gametes, b and b).
When these parents are crossed, their offspring will have the genotype Bb (heterozygous dominant).
Thus, they will all be blue.
Each cell normally contains 23 pairs of chromosomes. For a total of 46.
Explanation:
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