Irish Setters are type of dog. In Irish Setters, the allele for red coat color (R) is dominant over the allele for brown coat color (r). If a brown Irish Setter is crossed with a heterozygous red Irish Setter, which ofthe following genotypic ratios can
be expected?
Оа
2 RR: 1 Rr: Orr
Oь
1 RR: 2 Rr: 1 rr
Ос
2 RR: O Rr: 2 rr
Od
O RR: 2 Rr: 2 rr

Which group of chordates does  notpossess true backbones?                 a.  birds      b.  frogs and toads      c.  lampreys      d.  crocodilians

How is the male reproductive system different from other body systems? it isn’t necessary to vital signs. it monitors other body systems, and adjusts if necessary. it transports items from one system to another. it is the only system that produces hormones in the male.

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?