Chapter 6 Test Flashcards

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1
Q

If an organism’s genotype for a particular trait is Tt, then the organism is

A

hybrid

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2
Q

The study of inheritance is called

A

genetics

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3
Q

When a doctor analyzes high-frequency sound waves sent through the mother’s body to see an unborn child

A

ultrasound

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4
Q

Phenotype represents the

A

physical characteristic

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5
Q

The genes for most sex-linked trains re carried on this chromosome

A

X

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6
Q

In genetics, a cross is

A

a test to see how traits are inherited

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7
Q

The normal diploid chromosome number in humans

A

46

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8
Q

A cross between snapdragons with red flowers and snapdragons with white flowers that produces snapdragons with pink flowers is an example of what

A

incomplete dominance

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9
Q

A diagram used to visual genetic crosses

A

Punnett Square

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10
Q

The condition in which two dominant alleles for a single characteristic are both expressed

A

codominance

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11
Q

The only sex chromosome found in human females

A

X chromosome

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12
Q

The sex chromosome found in human males, but not in females

A

Y chromosome

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13
Q

Two or more genes producing a single trait

A

polygenic inheritance

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14
Q

A person who has an allele for a particular trait but does not exhibit the trait

A

carrier

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15
Q

A condition caused by a genetic defect

A

genetic disorder

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16
Q

The different forms of a gene for a particular trait

A

alleles

17
Q

A pea plant with wrinkled peas (recessive trait)

A

rr

18
Q

A person with type O blood (recessive trait)

A

ii

19
Q

A carrier for red-green colorblindness (sex-linked trait)

A

XR Xr

20
Q

A person who is hybrid for type B blood

A

IB i

21
Q

A person who is purebred for a recessive sex-linked trait

A

Xh Xh

22
Q

Most sex-linked traits are located on this chromosome

A

X

23
Q

If an X sperm fertilizes an egg, the child will be a

A

girl

24
Q

An organism’s genotype determines its

A

phenotype

25
Q

XY

A

Male

26
Q

XX

A

Female

27
Q

The Father of Modern Genetics because of the discoveries he made will experimenting with pea plants

A

Gregor Mendel