Genetics Mendelian Freckles are Not a Thing True Or False

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1.	In what inheritance patterns does the genotypic ratio match the phenotypic ratio? -> Codominance and incomplete dominance True False
2.	Alleles are different _______ of a gene. -> fragments True False
3.	The presence of freckles is a dominant Mendelian trait in humans. If your cousin has freckles, but her husband doesn’t, what are the chances that their baby will have freckles? -> Either 50% or 100% True False
4.	Hemophilia is an X-linked recessive bleeding disorder. If a normal woman whose father was a hemophiliac marries a normal man, what are the chances of their children having the disease? -> 4/4 True False
5.	A cross between a tomato cultivar producing fruit weighing, on average, 4 oz and another producing fruit weighing, on average, 6 oz generates offspring plants bearing fruits that weigh, on average, 8 oz. A possible explanation for this observation could be -> epistatic genetic variance True False
6.	A wild type phenotype -> is the most common phenotype in a population True False
7.	If John’s grandmother on his mother’s side had a mitochondrial disorder, how likely is he to inherit it? -> 0% True False
8.	Mutations in the Rb gene can cause retinoblastoma, a cancer that affects the retina. However, not every individual carrying the disease-causing mutation develops the disease. This phenomenon is known as -> incomplete penetrance True False
9.	In an attempt to reduce the number of bullocks born, which are no use to him for producing milk, a farmer has paid to have his diary herd artificially inseminated with sperm that has had half the sperm carrying a Y chromosome removed. What female-to-male ratio would you expect to see in the calves produced from this procedure? -> 3:1 True False
10.	A cat breeder has two Manx cats. What phenotypic ratio of offspring can she expect after mating them together? -> All tailed True False

Genetics True or False

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