AnswersPMHS Biology I Q2Asexual and Sexual Reproduction

Chromosomes Answers

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Which flowchart correctly lists the structures in order from smallest to largest?

A
gene DNA chromosome nucleus
Option A
B
gene chromosome DNA nucleus
Option B
C
DNA gene chromosome nucleus
Option C
D
DNA chromosome gene nucleus
Option D
2
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3

Pedigrees and karyotypes provide the means for individuals to identify their risks of genetic disorders. What can be observed on a karyotype but not on a pedigree?

A
family carriers of a genetic disorder
B
family history of a genetic disorder
C
risk of a genetic disorder in offspring
D
a visual image of a chromosomal defect
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5

Having the ability to roll or curl the tongue up along both sides to form a tube is a dominant trait. Which diagram represents the chromosomes in a person that does not have this ability?

A
2 chromosomes are labeled Upper H and Upper H.
Option A
B
2 chromosomes are labeled Upper H and h.
Option B
C
2 chromosomes are labeled h and h.
Option C
D
1 chromosome is labeled Upper H and the other chromosome is not labeled.
Option D
6

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7

Justin is looking at two chromosomes that have identical alleles for a particular trait. What term best describes these chromosomes?

A
heterozygous
B
homozygous
C
petit
D
queue
8

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14

Which term describes the chromosomal abnormality of having extra chromosomes?

A
heterosomy
B
polysomy
C
haploidy
D
diploidy
15

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16

In cell biology, what does the word queue describe?

A
the short arm of a chromosome
B
the long arm of a chromosome
C
the center of a chromosome
D
the material of a chromosome

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