My cousin needs help with her homework....she is in 7th grade and she is doing genotype and punnett squares and stupid stuff like that...this is due tomorrow and it is a big grade..please please help!!!!
2007-12-19 10:22:21 · 12 answers · asked by Anonymous in Science & Mathematics ➔ Botany
no, if both parents are recessive then all of their children should have blue eyes
although brown eyed offspring are possible it is rare. since this is a 7th grade homework assignment, I highly doubt they are taking into account genetic cross-over...so no...no brown eyed babies
2007-12-19 10:27:32 · answer #1 · answered by Anonymous · 1⤊ 0⤋
The least it would take is the two father and mom having Bb (dominant/recessive) genes. which would be carried on for many generations. even if with 2 brown eyed father and mom, the main suitable odds (assuming the two father and mom carry the recessive gene) are a million/4 that the little you will have blue eyes. a million/4 will carry BB genes and a million/2 will carry the Bb genes. So, 0.5 the human beings available with brown eyes have the potential for having blue eyed toddlers.
2016-10-08 22:54:46 · answer #2 · answered by ? 4 · 0⤊ 0⤋
No, but two brown eyes can have a blue eyed kid.
A dominant gene cannot be produced from 2 recessive genes. But a recessive gene may be pronounced if 2 dominant gene carriers have recessive genes as well.
2007-12-19 10:27:09 · answer #3 · answered by Jess 3 · 0⤊ 0⤋
Because blue eyes are recessive, any blue-eyed person has two recessive alleles. The offspring of two blue-eyed parents should all have blue eyes because they get one blue allele from each parent.
2007-12-19 10:26:07 · answer #4 · answered by hcbiochem 7 · 1⤊ 0⤋
as far as i can remember no! parents must have both recessive genes and therefore all their offspring will have two recessive genes as well....ergo..blue eyes...not brown
except in cases of gene mutation...i don't know if they cover this in 7th grade
2007-12-19 10:26:33 · answer #5 · answered by hello74 1 · 0⤊ 0⤋
yes my mom has brown and my dad had ???????(never met my dad) and i was born with blue eyes that later changed to brown after i was like 2months old
2007-12-19 10:31:55 · answer #6 · answered by chey 1 · 0⤊ 1⤋
my hubby is brown eyed and i am green our children have blue , weird
2007-12-19 10:25:01 · answer #7 · answered by Anonymous · 0⤊ 1⤋
Eye color can skip generations so can skin colors. So I would say yes.
2007-12-19 10:27:34 · answer #8 · answered by Little Lisa 3 · 0⤊ 1⤋
yes.
mutations in the genes.
of if ansestors had blue eyes.
it IS possible...
2007-12-19 10:25:50 · answer #9 · answered by standingXovation 1 · 0⤊ 0⤋
yes
2007-12-19 10:30:16 · answer #10 · answered by Anonymous · 0⤊ 1⤋