Help in biology please?

Question

In humans, widow's peak (W) is dominant over straight hairline (w) if a heterozygous male marries a female with a straight hairline what percent of their children can be expected to have a widow's peak?

A) 0%

B) 25%

C) 50%

D) 100%

E) Can't be determined

Thank you in advance for help with this!!!

Answer 1

This can be solved easily with a Punnet Square.

Step 1: Make a Key

WW-Widows peak

Ww- Widows peak

ww- Straight hairline

Step 2: Figure out the parents' gametes

Hterozygous means 2 different (W and w) so the male has to have a W and w The female's gametes are ww since she has a straight hairline.

Step 3- Make a box out of 4 little squares and draw the sperm on top Ww. The eggs are on the side ww.

Step 4- match the letters up in each box.

You can expect 50% to have a widow's peak

Answer 2

C) 50%

hope i helped

Answer 3

The father is heterozygous with a widow's peak:  Ww

The mother has a straight hairline: ww

Ww x ww

Make a punnett square and the offspring will be:

50% Ww and 50% ww

so the answer is c) 50% of the offspring can be expected to have a widow's peak

Answer 4

C) 50%

Parents are Ww & ww gives possible offspring Ww, Ww, ww, ww.(50:50)