9. In Pisum sativum (pea plants), yellow and round seeds are dominant phenotypes. In a cross between two F1 progenies having yellow and round seeds, 54 out of 900 F2 progenies having green, wrinkled seeds. The other seeds were yellow and round, yellow and wrinkled, green and round. These results show that * O A. the F2 phenotypic ratio is 1:1:1:1. O B. 14 of the seeds are green and wrinkled. O C. 56.25% of the seeds are yellow and round. D. the F1 pea plants are heterozygous for one pair of alleles,

Theories basic to all of the life sciences include the germ theory of disease. theory of evolution by natural selection. o two of these answers are correct none of these answers are correct o cell theory.

In a hypothetical breed of dogs, coat color is controlled by two genes. there are six different coat colors in this breed: black, brown, cream, gray, silver, and tan. consider the following crosses. cross 1: black females from a lineage of all black dogs are crossed with brown males from a lineage of all brown dogs. f1 males and females are all black. when f1 are intercrossed, f2 males and females are black or brown. cross 2: black females from a lineage of all black dogs are crossed with tan males from a lineage where all males are tan and all females are cream. f1 males are black, f1 females are gray. when f1 are intercrossed, f2 males and females are black, brown, gray, or tan. cross 3: silver females from a lineage where all females are silver and all males are gray are crossed with brown males from a lineage of all brown dogs. f1 males and females are all gray. when f1 are intercrossed, f2 males are black, brown, gray, or tan, f2 females are cream, gray, silver, or tan. select the correct statements regarding the mode of inheritance of the coat color genes. a) both genes are x-linked. b) both genes are autosomal. c) one of the genes modifies the expression of the other gene. d) each gene has an additive effect on the intensity of coat color. e) each gene independently specifies three colors. f) one of the genes is autosomal, and the other is x-linked.

Hemoglobin is a proton that carries oxygen around the body what is hemoglobin made from