Exam 9: Patterns of Inheritance

A person with AB blood illustrates the principle of

Below are two statements. Which (if any)applies to the law of segregation? Which (if any)applies to the law of independent assortment? I: Phenotypes for long tails and big eyes are inherited separately in lab mice. II: A baby mouse inherits a maternal red eye allele and a paternal black eye allele.

Imagine that beak color in a finch species is controlled by a single gene. You mate a finch homozygous for orange (pigmented)beak with a finch homozygous for ivory (unpigmented)beak and get numerous offspring, all of which have a pale, ivory-orange beak. This pattern of color expression is most likely to be an example of

The expression of both alleles for a trait in a heterozygous individual illustrates

All the offspring of a cross between a red-flowered plant and a white-flowered plant have pink flowers. This means that the allele for red flowers is ________ to the allele for white flowers.

Varieties of plants in which self-fertilization produces offspring that are identical to the parents are referred to as

How many sex chromosomes are in a human gamete?

Linked genes generally

After reading the paragraphs below, answer the questions that follow. During a summer study abroad program, you travelled to Austria to study genetics at the University of Vienna. While you were there, a momentous discovery was made: some of Gregor Mendel's original lab books and notes were found to be buried outside of the abbey where he lived. It just so happened that the professor you were working with obtained copies of these notes and enlisted your help to decipher them. You hired a translator to translate Mendel's notes from Czech to English, and using your knowledge of modern genetics (which Mendel did not have!) you were able to construct a partial Punnett square (shown below). Because the notebook was damaged from being buried for so long, this is the only information that you have regarding a cross that Mendel must have performed. Your professor has tasked you with figuring out more about this experiment. -In pea plants, round peas are dominant (R)and shriveled peas are recessive (r)and yellow peas (shown as light gray in Punnett square)are dominant (Y)and green peas (dark gray)are recessive (y). Using this information and the partial Punnett square above, what were the phenotypes of the parental plants that were used in this cross by Mendel?

Which of the following statements best explains why dominant alleles that cause lethal disorders are less common than recessive alleles that cause lethal disorders?

Which of the following is an example of incomplete dominance in humans?

After reading the paragraph below, answer the questions that follow. A man and his wife are having trouble having a baby. Using modern technologies, the woman's eggs are removed, fertilized with her husband's sperm, and implanted into her uterus. The procedure is successful, and the woman gives birth to a healthy baby boy. After a while, though, they discover that their son is colorblind and has blood type O. The woman claims that the child can't be theirs since she has blood type A and her husband has type B. Also, neither parent is colorblind, although one grandparent (the woman's father) is also colorblind. -As a genetic counselor, you would explain to the parents that

You are looking at an unknown cell under a microscope that has 22 chromosomes plus two X chromosomes. Which of the following is the most likely identity of this cell?

Which of the following is essentially the opposite of pleiotropy?

After reading the paragraphs below, answer the questions that follow. During a summer study abroad program, you travelled to Austria to study genetics at the University of Vienna. While you were there, a momentous discovery was made: some of Gregor Mendel's original lab books and notes were found to be buried outside of the abbey where he lived. It just so happened that the professor you were working with obtained copies of these notes and enlisted your help to decipher them. You hired a translator to translate Mendel's notes from Czech to English, and using your knowledge of modern genetics (which Mendel did not have!) you were able to construct a partial Punnett square (shown below). Because the notebook was damaged from being buried for so long, this is the only information that you have regarding a cross that Mendel must have performed. Your professor has tasked you with figuring out more about this experiment. -In pea plants, round peas are dominant (R)and shriveled peas are recessive (r,)and yellow peas (shown as light gray in Punnett square)are dominant (Y)and green peas (dark gray)are recessive (y). Using this information and the partial Punnett square above, what phenotype should be in the square labeled B?

Crossing over ________ genes into assortments of ________ not found in the parents.

Which of the following statements is false?