Draw i t assume you are mapping genes a, b, c, and d in drosophila. you know that these genes are linked on the same chromosome, and you determine the recombination frequencies between each pair of genes to be as follows: a–b, 8%; a–c, 28%; a–d, 25%; b–c, 20%; b–d, 33%. (a) describe how you determined the recombination frequencies for each pair of genes. (b) draw a chromosome map based on your data.

When species lose their habitats they may..

Which of the following is most important in making the typical seed more resistant to adverse conditions than the typical spore? a) a different type of sporopollenin b) an internal reservoir of liquid water c) integument(s) d) ability to be dispersed e) waxy cuticle

Plz ! cattle ranchers and dairy farmers rarely allow all of their animals to reproduce instead they practice selective breeding and only encourage the reproduction of animals with specific features. which of the following cows would a dairy farm most likely choose to reproduce? a. a cow that makes a lot of milk. b. a cow that can run quickly. c. a cow with a think, soft fur. d. a cow with large, strong hooves.