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Genetics problems
Question No. 1: A cross test (punnet square) will test whether a black guinea is heterozygous
or homozygous.
Black fur= A
White fur=a
AA x
aa
a
a
A
Aa
Aa
A
Aa
Aa
According to punnet square it is cleared that there will be 100% probability of black fur
heterozygous off springs if a guinea pig is homozygous for black fur.
Aa x aa
a
a
A
Aa
Aa
a
aa
aa
There will be 50% probability of black fur and 50% probability of white fur if a genuine
pig is heterozygous for black fur.
Question No. 2
Short stem= l , Long stem= L
Yellow pod pea= y , Green pod pea= Y
Long & green pod: LLYY
Short &yellow: llyy
1.
a) F1 generation:
Genotypes:
llyy x LLYY =
LlYy
b) Phenotypes: 100% lo...