Scale color and horns are independently assorting traits in Basalisks. You cross

Question

Scale color and horns are independently assorting traits in Basalisks. You cross a true breeding female Basalisk with Blue scales (B) and no horns (h) to a true breeding male Basalisk with white scales (b) and horns (H). The h and b allelels are both recessive. In the F1 progeny, all the males have Blue scales and no horns and all the females have Blue scales and horns. 1) What is the genotype of parental generation?    2) What is the genotype of the F1 males and females? 3) You cross an F1 male to an F1 female. What is the probability of obtaining a white-scaled female basilisk with no horns?

Explanation / Answer

Female :BBhh

Male : bbHh

male

From above punnet sqaure we can conclude that:

1) Genotype of parent is

Female :BBhh

Male : bbHh   

2)Genotype of F1 male is : Bbhh

Genotype of F1 female is:BbHh

3) Bbhh * BbHh

Bbhh gamets will be Bh,bh,Bh,bh

BbHh gametes will be BH,Bh,bH,bh female

The probability of obtaining a white-scaled female basilisk with no horns = 2/16 = 1/8.

female bH bh Bh BbHh Blue scales and horns Bbhh blue scales ,no horns Bh BbHh Blue scales and horns Bbhh blue scales,no horns

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