In cattle (.bos taurus), the homless (polled) gene (p) is dominant to thegene for homs (p). a polled bull is bred with three different cows. cow #lis homed and she gives birth to a polled calf. cow #2 is horned and shegives birth to a homed calf. cow #3 is polled and she gives birth to a hornedcalf. what are the genotypes of the four parents? what are the phenotypic. ratios that you would expect to see from further matings between these 4 cattle?
two white sheep (ovis aries) mate atd 25yo of the offspring are black. p- what are the genotypes of the parents?
10. ln mice (mzs musculus), yellow coat color @) is dominant to black (e).the homozygous condition (ee) is lethal and it kills embryos soon afterfertilization. iftwo yellow mice are crossed, what genotypes would you expect andin what ratio? what phengtypes would you expect and in what ratio? i
1.a rough coated guinea pig is crossed with a smooth coated guinea pig and24 of theft 24 offspring are rough coated. what would be the expectedphenotypic ratios from the following crosses: a. inbreed 2 members of the fl generationb. back cross one of the fl guinea pigs with the smooth parentc. back cross one of the fl guinea pigs with the rough parent
12.two black fdmale skinks (eumeces anthracinus) are crossed with a brownmale. in several clutches, female #1 produced 9 black and 7 brown offspring andfemale # 2 produced 17 black offspring. from this information, whatassumptions can you make about how black and brown color is inherited in skinks? what are the genotypes of the three parents?
13. in andalusian fowls (gallus gal/as), black plumage (feathers) is dominantto white and the heterozygous condition results in blue plumage. what phenotypes, andin what ratios, will result if you bread a blue andalusian with a a) black bird, b) bluebird, and c) white bird? is it possible to produce a flock ofblue birds that will produceonly blue offspring when mated with each other? why?
14. in the michigan lily (lilium michiganense), red flower color (r) isincompletely dominant to yellow (r). the heterozygous flowers are orange. a redflowered michigan lily is crossed with a yellow flowered one. a. what will the members of the fl generation look like? b. give the phenotypic ratio of the offspring if a mernber of thefl generation is back crossed with the red parentc. give the phenotypic ratio of the offspring is a member of thefl generation is back crossed with the yellow parentd. give the phenotypic ratio of the offspring from a cross of twof i individuals
15. when yellow guinea pigs are crossed with white ones, they only producecream colored offspring. two cream colored guinea pigs were crossed and theyproduced 23 yellow, 45 cream and 19 white offspring. what type of inheritanceis this?