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Exam 10: Patterns of Inheritance

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Question 1

Multiple Choice

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Which of the following is not true with regard to the law of segregation?

A) Each individual has two factors for each trait.
B) Genes segregate during gamete formation.
C) Gametes contain only one gene from each pair.
D) During fertilization, each new individual obtains two genes for each trait.
E) Each gamete contains two genes for each trait.

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E

Question 2

Multiple Choice

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A male is always homozygous for a trait that is

A) codominant.
B) X-linked.
C) autosomal.
D) dominant.
E) dihybrid.

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Question 3

Multiple Choice

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What type of disorder is muscular dystrophy classified as?

Morgan buys a male python from a snake dealer who tells him that the snake carries the albino allele. What is the most effective way for Morgan to verify this statement?

Which is not true according to Mendel's law and meiosis?

If a true-breeding tall pea plant is crossed with a tall pea plant of unknown parentage, which of the following is correct?

During meiosis, each pair of alleles on the homologous chromosomes sorts independently from all other pairs of alleles. This statement corresponds to

Both parents are heterozygous for Tay-Sachs disease an autosomal recessive disorder) . Three children in a row were born with Tay-Sachs disease. What is the chance that a fourth child will have Tay-Sachs disease?

A man with blood type A and a woman with blood type B can have a baby with blood type O.

In a dihybrid cross where both parents are heterozygous, the phenotypic ratio is

Linked genes

Hydrangeas are a flowering plant with large showy blooms. When a plant is grown in aluminum-rich soil, it has blue flowers; if the same plant is transplanted into soil that is lacking aluminum, the flowers produced will be pink. This is an example of

Which of the following is incorrectly matched?

What are all possible gametes that can be produced by an individual with the following genotype: FFGg?

Vitamin-D resistant rickets is a sex-linked dominant trait, which leads to softening of the bones, which can cause fractures and deformities. Rickets is often due to a deficiency of vitamin D; however, with vitamin- D resistant rickets, ingestion of vitamin D is ineffective. Maria's mother is normal and does not display any symptoms of this disease. Maria's father, however, has the disease. Maria marries a man that does not have the disease. What is the probability that they will have a son that has the disease?

In a monohybrid cross, how many traits are examined?

In a one-trait testcross, the phenotype that disappears in the F₁ generation of a homozygous dominant and homozygous recessive cross is the

What genetic disorder is associated with the lack of an enzyme necessary for the normal metabolism of the amino acid phenylalanine?

A blue-eyed, left-handed woman marries a brown-eyed, right-handed man who is heterozygous for both of his traits. If blue eyes and left-handedness are recessive, how many different phenotypes are possible in their children?

Alleles are