Wolves are observed having Grey fur (G) dominant to Black fur (g), Blue eyes (B) dominant to Yellow eyes (b). In the P1 generation, wolves GGbb and ggBB are crossed: What phenotype and genotype will the F1 generation have?

In chickens, rose comb (R) is dominant to single comb (r). What types of offspring would be expected from a white rooster who is heterozygous rose combed who is crossed with a single-combed Andalusian blue hen.

In kangaroos, pouched kangaroos (P) are dominant over pouchless kangaroos (p) and bushy tails (B) are dominant over skinny tails (b). You perform the following cross and observe the progeny. PPBb x Ppbb To determine if the difference between the observed and expected results are due to change, you perform a chi-squared analysis. What degree of freedom would you use for this analysis? 0 20000 2 AWN 3 4

2) A different "green-round" individual of the same pea species was crossed with a plant grown from a white, wrinkled pea. The following offspring were obtained: 37 green round, 44 green wrinkled, 41 white round and 35 white wrinkled. a) what were the parental genotypes this time? b) explain the ratio by means of a diagram. c) What other genotypes could the green round parent have had? Predict the offspring that would have resulted in each case. d) Crossing an individual with an unknown genotype with an individual showing the recessive phenotype(s) is know as a test cross. What is the advantage of using the individual with the recessive phenotype(s)?