Monosomic cross
ABB × ABB
Gametes | AB | B |
AB | AABB, normal, green | ABB, green, monosomic |
B | ABB, green, monosomic | BB, lethal, nullisomy (both copies of A are absent) |
Disomic
cross
aabb × aabb
Gametes | ab | ab |
ab | aabb | aabb |
ab | aabb | aabb |
All will be yellow.
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just need 44 b inhibit recombination; 1.e., recombinant prUUUUIS JIU MIU MIUI Questions 48 to 59...
44. In Nicotiana tabacum, there are two independently-assorting gene loci that influence the appearance of the yellow burley character, i.e. A and B. When both loci are homozygous for their recessive alleles, i.e. aabb, the plant is yellow. When a dominant allele, i.e. A or B, is present at either locus, the plant is green. (a) If a cross were made between a homozygous green strain monosomic for one of these chromosomes (ABB) and a disomic yellow strain (aabb), what...
Practice questions for BIO 340 (Exam 2) I need help with these questions Please. WILL GIVE GOOD RATING 1. Wild type blue-eyed mary has blue flowers. Two genes control the pathway that makes the blue pigment: The product of gene W turns a white precursor into magenta pigment. The product of gene M turns the magenta pigment into blue pigment. Each gene has a recessive loss-of-function allele: w and m, respectively. A double heterozygote (Ww Mm) is self-pollinated. What proportion...