Question 1

An individual who inherits three copies of chromosome 18 will develop ________ syndrome.

Accepted Answer

The answer of An individual who inherits three copies of...

Question 2

Match each of the following disorders to the genotype with which it is associated.
-recessive allele on chromosome 15
A)Tay-Sachs
B)Turner syndrome
C)Edwards syndrome
D)Klinefelter syndrome
E)Down syndrome

Accepted Answer

Tay-Sachs disease is associated with a recessive allele on chromosome 15.

Question 3

A phenotype is determined by ________ and ________.

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The answer of A phenotype is determined by ________ and...

Question 4

The inheritance of a trait that is determined by many genes acting together, such as eye color, is called ________ inheritance.

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The answer of The inheritance of a trait that is...

Question 5

A(n) ________ in a chromosome is often lethal and occurs when a part of chromosome breaks off or is lost.

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The answer of A(n) ________ in a chromosome is often...

Question 6

________ testing refers to the analysis of an individual's genetic material to determine predisposition to a particular health condition.

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The answer of ________ testing refers to the analysis of...

Question 7

If the two alleles of a particular gene pair are the same, the individual is ________ for that gene.

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The answer of If the two alleles of a particular...

Question 8

According to Mendel's law of ________, genes of a gene pair separate from one another during the formation of gametes.

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The answer of According to Mendel's law of ________, genes...

Question 9

A display of an individual's chromosomes is known as a(n) ________.

Accepted Answer

The answer of A display of an individual's chromosomes is...

Question 10

During embryological development, if a certain gene on the Y chromosome is activated during the sixth or seventh week of development, the embryo will develop into a ________.

Accepted Answer

The answer of During embryological development, if a certain gene...

Question 11

For several phenotypes in the human population, it is clear that more than just the genotype is influencing the expression of the trait. Analysis of human populations indicates that height and weight are examples of phenotypes under environmental influence as well as genotype. Provide evidence that would support the contention that both environment and genotype influence human weight.

Accepted Answer

The answer of For several phenotypes in the human population,...

Question 12

Failure of homologous chromosomes or sister chromatids to separate properly is called ________.

Accepted Answer

The answer of Failure of homologous chromosomes or sister chromatids...

Question 13

In ________ dominance, the phenotype of the heterozygous genotype is an intermediate between the phenotype of either homozygous genotype.

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The answer of In ________ dominance, the phenotype of the...

Question 14

Genes for different traits located on the same chromosome in close proximity are called ________ genes.

Accepted Answer

The answer of Genes for different traits located on the...

Question 15

Explain why in some cases, linked genes may be separated during crossing-over, yet at other times, linked genes are not affected by the recombination during meiosis.

Accepted Answer

The answer of Explain why in some cases, linked genes...

Question 16

Alternative versions of the same gene are ________.

Accepted Answer

The answer of Alternative versions of the same gene are...

Question 17

Genes located on the same chromosome are not always inherited together because of the process of ________, which occurs during meiosis; this process "reshuffles" the genes.

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The answer of Genes located on the same chromosome are...

Question 18

A(n) ________ refers to the complete set of DNA within the chromosomes of an individual.

Accepted Answer

The answer of A(n) ________ refers to the complete set...

Question 19

Match each of the following disorders to the genotype with which it is associated.
-trisomy 21
A)Tay-Sachs
B)Turner syndrome
C)Edwards syndrome
D)Klinefelter syndrome
E)Down syndrome

Accepted Answer

Trisomy 21 is associated with Down syndrome, which is caused by an extra copy of chromosome 21.

Question 20

The process by which a piece of a chromosome breaks off and then attaches to another chromosome is referred to as ________.

Accepted Answer

The answer of The process by which a piece of...

Quiz 19: Genetics and Inheritance