Question

A woman who is homozygous dominant for Black Hair marries a man who is heterozygous for brown hair. What are the possible genotypes and phenotypes of their offspring be? * Your answer

Answer 1

Do you know what homozygous and heterozygous mean?

Answer 2

no

Answer 3

this is just a question tho

Answer 4

Homozygous: having two identical alleles of a particular gene or genes.

Heterozygous: having two different alleles of a particular gene or genes.

Answer 5

oh

Answer 6

so what is the awnser

Answer 7

The symbols black hair is: B

The symbol for brown hair is: b

Answer 8

ok i get it now but what is the answer

Answer 9

hello

Answer 10

For the Phenotypes:

Make a punnet square

B b
_________
B | BB | Bb|
B |BB | Bb|

1/2 BB (Black, Black)
1/2 Bb (Black, Brown)

For the Genotypes:

Make another punnet square

B b
_________
B | BB | Bb|
B | BB | Bb|

1/2 BB (Black, Black)
1/2 Bb (Brown, Black)

Answer 11

is this the answer

Answer 12

No. I will get to that soon.

Answer 13

then what is the answer

Answer 14

So half the Phenotypes is BB. Half is Bb.

And half the Genotypes is BB. Half is Bb.

1/2 1/2 1/2 1/2

Math time :)

So, it's a higher chance for Black hair, since the husband is heterozygous.

To start:

Phenotype:
BB
1/2 the time

Bb
1/2 the time

Genotype:

BB
1/2 the time

Bb
1/2 the time

Answer 15

We will have to multiply:

Phenotype
\[\frac{ 1 }{ 2 }*\frac{ 1 }{ 2 }\]
Genotype
\[\frac{ 1 }{ 2 }*\frac{ 1 }{ 2 }\]
So, what is 1/2*1/2?