The degree of earlobe attachment in humans is inherited as a simple dominant of free earlobes, or as a recessive allele of attached earlobes. What is the probability that a woman with attached earlobes will have children with attached earlobes if their father is heterozygous for earlobes?
2007-03-22 16:33:54 · 2 answers · asked by Gee 1 in Science & Mathematics ➔ Biology
A = free
a = attached
Parents: aa x Aa
Gametes a a .... A a
First row of Punnett square is aA aa
Second row of square is aA aa
Two out of four possibilities are attached.
1/2 chance or 50% chance that each child has attached earlobes.
2007-03-22 16:38:02 · answer #1 · answered by ecolink 7 · 0⤊ 0⤋
amen.. im not going to try and top his answer..
one suggestion, use 'F' as the letter, as the 'free earlobes' is the dominant allele and so should determine the letter used in punnett genetics.
2007-03-22 23:42:48 · answer #2 · answered by Anonymous · 0⤊ 0⤋