1. What percentage of the offspring will have a homozygous recessive genotype? Gray fur White fur 2. What will be the ratio of gray fur to white fur in the offspring? Gg x gg 3. What percentage of the offspring will have a tall phenotype? t. Tall Short 4. What percentage of the offspring will have a homozygous recessive genotype? TT tt 5. What percentage of the offspring will have white eyes? White eyes Dark eyes 6. What percentage of the offspring will have a heterozygous genotype? 7. What percentage of the offspring will

TT * Tt Long beak Long beak 15. What percentage of the offspring will have long beaks? 16. What will be the ratio of long beaks to short beaks in the offspring? LI x LI White fur Gray fur 17. What percentage of the offspring will have the phenotype of gray hair? 18. What percentage of the offspring will have a homozygous recessive genotype? gg Gg

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2. Describe the phenotype of the cats with these genotypes (If allele not specified, assume wild type): CC ss OO BB dd McMc tt ww Light brown male with choco [Choose ] Light brown male with chocolate tips ctct ss OY bb TAt A uniformly colored black cat Light grey female with dark grey mackerel stripes Black female with large white patches Dark grey with black mackerel stripes Cc SS Oo BB TATA Cream male with small white patches and orange mackerel stripes CC Ss oY bb dd tt [Choose ]

16. A couple has two children; one with a widow's peak and one without. If both parents have a widow's peak what do you know to be true? 1. Both parents are heterozygous for the trait 2. Both parents are homozygous dominant for the trait 3. Both parents are homozygous recessive 4. One parent is homozygous dominant the other is homozygous recessive

1. Armin and Annie are going to have a baby. Annie has dimples in her cheeks (a dominant trait), while Armin does not. You know that Annie's father has dimples in both cheeks, while her mother does not. Her mother must have the recessive trait. Annie's father has the dominant trait. but vou don't know if he is a homozygote or heterozygote. But you still know what Annie's genotype must be because Annie must have a recessive allele since that is all she could have inherited from her mother. Since Annie has a dimple you know she inherited a dominant allele from her father. What are the chances Armin and Annie's baby will have dimples? Determine the Phenotype and Genotype and its probability.

Eyes – What percent of offspring will have only one large eye? 75% Eye Color – What percent of offspring will have red eyes? 100%  Skin Color – What percent of offspring will have yellow and blue skin?

2 armless/armless __2__ hornless/hornless _3__ legs/legless 4 full armor/no armor 1. Homozygous dominant 2. Homozygous recessive 3. Heterozygous 4. Co-dominant

2. One parent is homozygous for the allele for myostatin that results in big muscles and the other is homozygous for the allele that results in typical muscles (MM x mm). a. Part A (fill in the boxes): M M m m b. Part B (fill in the boxes): Total number of offspring with the heavily muscled phenotype Proportion and percent of heavily muscled offspring Total number of offspring with the in-between phenotype Proportion and percent of in-between offspring Total number of offspring with typical muscles Proportion and percent of typical muscled offspring Total: 100%

1. In humans, widow’s peak (W) is dominant over having a straight hairline (w). If a homozygous man with a widow’s peak has a child with a woman with a straight hairline, what are the odds the child will have a widow’s peak? Show work.   2. Ellis-van Creveld syndrome is a recessive inherited condition that results in 6-fingered dwarfism. Two parents without this condition have with Ellis-van Creveld syndrome. What are the genotypes of the parents and offspring? What are the odds that the son will have a 6-fingered child if his partner is a woman who is heterozygous for the condition? Show work.   3. The gene for dangling earlobes is dominant over the gene for attached earlobes. A woman with attached earlobes has a child with a man with dangling earlobes whose mother had attached earlobes. What is the probability that this child will have attached lobes? Show work.   4. In humans, normal pigmentation is due to a dominant gene, while albinism is recessive. A normally pigmented man has a…