B. In poinsettias, the gene for red bract color (R) is incompletely dominant over its allele for white bract color (r). Heterozygous individuals have pink bracts. What ratios of bract color would you expect among the following crosses? 1. red x red 2. red x pink 3. white x pink 4. pink x pink

a. In mice, dark coat color is dominant over albino and short hair is dominant over long hair. Assume that these two traits are caused by two independently assorting genes. Hair color is determined by the (D/d) alleles. Hair length is caused by the (S/s) alleles. Two mice are crossed and result in the following progeny: 20 short-haired, dark mice and 21 short-haired, albino mice. What is the most likely genotype for the parents?   b. The researcher who is counting the mice suddenly realizes that the trait is probably X-linked as all the albino mice are one sex and all the dark mice are theoppositesex. What can you conclude about the 2 parental mice with regard to the hair color trait?

What is the approximate percentage chance that individual V.2, shown in the pedigree diagram below will have inherited the X- linked recessive allele shown to be carried by his great-great-grandmother? Note: only type the number, not the percentage symbol. Answer: The chance that individual V.2 shown in the pedigree below has inherited the X-linked recessive allele shown to be carried by his great-great grandmother is approximately Blank 1 percent. 노 ㅍ먹이 12 I 마일 메인 de 먹어 요 58 ㅁ + ܡܐ

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