Which of the following genotypes is heterozygous?Multiple choice question.YyYYyyYYww
Question
Which of the following genotypes is heterozygous?
- Yy
- YY
- yy
- YY
- ww
Solution
The heterozygous genotype among the options given is Yy.
Here's why:
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A genotype is the set of genes in our DNA which is responsible for a particular trait.
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The two types of genotypes are homozygous (where the two genes are the same - either dominant or recessive) and heterozygous (where the two genes are different - one dominant and one recessive).
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In the options given, YY and yy are homozygous genotypes because they contain the same type of genes. YY is homozygous dominant and yy is homozygous recessive.
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Yy is a heterozygous genotype because it contains one dominant gene (Y) and one recessive gene (y).
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The option "ww" is not clear. If "w" represents a gene, then "ww" would be a homozygous genotype, either dominant or recessive depending on whether "w" is a dominant or recessive gene.
So, the heterozygous genotype in the options provided is Yy.
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