In dogs, the barking trait is dominant over the silent trait and erect ears are dominant over drooping ears. Now, find out
$(i)$ What is the expected phenotypic ratio of the offspring when dogs, heterozygous for both the traits are crossed?
$(ii)$ What are different phenotypes observed?
$(iii)$ What is this type of cross known as?
$(i)$ What is the expected phenotypic ratio of the offspring when dogs, heterozygous for both the traits are crossed?
$(ii)$ What are different phenotypes observed?
$(iii)$ What is this type of cross known as?
(N/A) $(i)$ Let $B$ be the allele for barking and $b$ for silent. Let $E$ be the allele for erect ears and $e$ for drooping ears. The cross is $BbEe \times BbEe$.
The expected phenotypic ratio is $9:3:3:1$.
$(ii)$ The different phenotypes observed are:
$(iii)$ This type of cross is known as a Dihybrid cross.
The expected phenotypic ratio is $9:3:3:1$.
$(ii)$ The different phenotypes observed are:
| Barking dogs with erect ears | Barking dogs with drooping ears | Silent dogs with erect ears | Silent dogs with drooping ears |
| $9$ | $3$ | $3$ | $1$ |
$(iii)$ This type of cross is known as a Dihybrid cross.
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