Biology
Biology, 02.11.2019 07:31, boxergirl2161

Lin the common garden pea (pr um sativum),the gene for red flower color(r) is_dominant to the gene for white flower color (i). if a homozygous redplant is crossed with a white plant, what will be the genotype of iheloffspringrif two members of the fl generation are crossed witlh each other, what will b"ethe genotypes and phenotypes ofthe f2 generation?
2. in guinea pigs (cavia porcellus), the gene for rough coat is dominant tothe gene for a smooth coat. if a homozygous rough coated animal is mated witha smooth coated one, what will the fl progeny (offspring) look like? whatwill be the phenotypes of offspring produced when: -a. two ofthe fl offspring are crossed? b. an fl offspring is back crossed with the smooth parent? c. an fl offspring is back crossed with the rough parent?
3.. ln the gar^den pea, the gene for tall plants is dominant to the gene forshort (dwarfl plants. a tall plant is crossed with a dwarf one and % of theoffspring are tall and % ofthe offspring are dwarf. what are the genotypes ofthe parents?
4. two rough coated guineas pigs were bred together and produced 2 roughcoated and 4 smooth coated offspring. a. what were the genotypes of th'e parents? b. what percent of the offspring can be expected to be homozygousfor rough coat? c. what percent of the offspring can be expected to be smooth coated?
5. in humans (homo sapiens), the presence of a widow's peak (b) is dominantto a continuous hairline (b). a man with a widow's peak marries a woman with acontinuous hairline and they have r 1 children. all oi the children have awidow's peak. what are the genotypes of the father, mother and all l l children?
6. jim has a continuous hairline and both ofhis parents have a widow, s peak. michelle has a widow's peak. jim and michelli have one child that has acontinuous hairline. what are the genotypes of jim, michelle, all of theirpaxents, and their child?
7' the abilify to taste phenylthiocarbamide (prc) is determined by a dominantgene (t). individuals who can taste ptc are called tasters. a man who is ataster and has a non-taster mother marries a woman who is a taster. she hasfive siblings, three ofwhom are non-tasters. what are the chances that thechildren of this marriage will be non{asters?

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