Question
8. What is a Barr body?
Inactive * chromasome in a fende
Cel
In cats, spot color is determined by an X-linked gene with an allelc that makes orange spol
and one that makes black spots. The "background" fur color that allows these sputs lu slio
is white.
9. This cat is a heterozygote. Write its
genotype and color it properly with
spots. Is it a male or a female?
10. This cat a female with black spots.
Give its genotype and color
ALAAM
Answer
8. A Barr body is an inactive X chromosome in a female cell.
9. The genotype of the cat is X^O X^o, with orange and black spot alleles on each X chromosome. It is not possible to determine the sex of the cat from the given information.
10. The genotype of the cat is X^B X^b, with black spot alleles on one X chromosome and a non-spot allele on the other.