If two parents with dominant Phenotypes produce an offspring with with a recessive phnotype, then
A both parents are hetrozygous
B both parents are homozygous
C one parent is hetrozygous
D one parent is hetrozygous
2007-01-23 13:34:34 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Biology
If two parents with dominant Phenotypes produce an offspring with with a recessive phnotype, then
A both parents are hetrozygous
B both parents are homozygous
C one parent is hetrozygous
D one parent is homozygous
2007-01-23 13:41:45 · update #1
the answer is A both parents are heterozygous
in order for the offspring to distribute a recessive trait the parents must both carry it. If only one parent was heterozygous then the dominant trait it gives to the offspring would mask the recessive trait.
brief but hope it helps
2007-01-23 15:04:54 · answer #1 · answered by Anonymous · 0⤊ 0⤋
A and B i think are the most possible
2007-01-23 21:57:37 · answer #2 · answered by angie 2 · 0⤊ 0⤋
A, thats easy
2007-01-23 21:40:07 · answer #3 · answered by Anonymous · 0⤊ 0⤋
both parents are heterozygous.
A_xA_->aa can only happen if both are Aa (check the punnett square)
2007-01-23 22:05:47 · answer #4 · answered by Katie B 3 · 0⤊ 0⤋
the answer is A
2007-01-23 21:38:52 · answer #5 · answered by Sperminator 2 · 1⤊ 0⤋