Question 1

How do errors in meiosis cause human genetic disorders?

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Question 2

An extra copy of chromosome 21, a condition called syndrome, occurs in about 1 of every 700 births, although this rate varies tremendously with the age of the parents.

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Question 3

About 1 in every 500 to 1,000 males is born with two X chromosomes and one Y chromosome, a condition known as _ syndrome.

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Question 4

The complete set of chromosomes from a single cell is its _.

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Question 5

About 1 in every 2,500 female babies has only one X chromosome, a condition known as _ syndrome.

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Question 6

What is the name of the process depicted below that shows the life cycle of the typical plant?

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Question 7

Errors in meiosis, called , can affect the number of sex chromosomes or autosomes in a gamete.

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Question 8

Trisomy is a mutation that results in a cell having an extra .

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Question 9

What is the name of the figure shown below that depicts the staining and photographing of an entire set of duplicated, condensed chromosomes from a single cell?

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Question 10

How does meiotic cell division produce genetically variable, haploid cells?

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Question 11

Mitosis of a haploid cell, a diploid cell, or both, results in the growth of multicellular bodies.

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Question 12

A couple already has 9 children, and they are all girls. If they decide to have a 10th child, it has a 50% chance that it will be male and a 50% chance that it will be female.

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The gender of each child is determined independently and randomly, so the fact that the couple has already had 9 girls does not affect the probability of their next child being male or female. Therefore, there is a 50% chance that their 10th child will be male and a 50% chance that it will be female.

Question 13

How does sexual reproduction produce genetic variability?

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Question 14

Occasional errors occur during meiosis, resulting in gametes that have too many or too few chromosomes. Such errors in meiosis, called , can affect the number of sex chromosomes or autosomes in a gamete

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Question 15

Sperm and egg fuse to form a diploid fertilized egg, called a .

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Question 16

About 1 male in 1,000 is born with two Y chromosomes and one X chromosome, a condition known as syndrome.

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Question 17

The mutual exchange of DNA between maternal and paternal chromosomes at chiasmata is called .

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Question 18

If a cell contains only one member of each pair of homologues, it referred to as .

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Question 19

How do meiosis and union of gametes produce genetically variable offspring?

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Question 20

About 1 in every 1,000 women has three X chromosomes, a condition known as _ X.

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Quiz 10: Meiosis: the Basis of Sexual Reproduction