One member of a homologous chromosome pair carries alleles A and b, while the other member carries a and B. If crossing over occurs between these genes, the parental type gametes will have the genotypes ________, while the recombinant gametes will have the genotypes ________.
A. Ab and aB; AB and ab
B. AB and ab; Ab and aB
C. A and b; a and B
D. AB and aB; Ab and ab
E. A and a; B and b
Could you also please give a percentage% of how sure you are. Thank You
2007-05-12 20:53:21 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Biology
A. is the correct answer.
Parental gametes will be just like the original chromosomes: Ab and aB. Crossing over will just trade the a's or the b's: AB and ab.
100% sure.
2007-05-12 21:12:22 · answer #1 · answered by ecolink 7 · 0⤊ 0⤋
A. learn Biology
2007-05-12 21:16:43 · answer #2 · answered by hao.0907 1 · 0⤊ 0⤋