00:02
Hello students, the question is black hair allele that is capital p, it is dominant over the black hair, it is dominant over the blonde hair allele that is small p, blonde hair.
00:31
We have to make a pernette square between the blonde hair man and a heterozygous black hair woman and determine the genotypes and phenotypes of the offspring and what happen if the black hair allele is incompletely dominant over the blonde hair allele that we have to answer.
00:51
So if we see the genotype of the parents or the genotype of the blonde hair man has the recessive genotype, blonde hair man, he has a recessive genotype that is small b, small p and a heterozygous black hair woman, she has a dominant genotype and a recessive allele, their genotype will be capital b, small p.
01:59
Now we can create a pernette square and by creating a pernette square we'll get the alleles, we can see here capital b, small b and small b, small p.
02:29
So we'll get here capital b, small b, small p, small p.
02:39
We'll get the genotype capital b, small b and small b, small p.
02:45
In terms of phenotypes, this offspring will have a black hair since b is dominant and this offspring will have blonde hair.
03:11
So there are 50 % chances of having black hair and 50 % of chances of having blonde hair...