Beyond Mendel Flashcards

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0
Q

Nondisjunction

A

Abnormal numbers of chromosomes usually occurring during meiosis

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1
Q

What is chromosome mutation?

A

Mutation that affects a group of genes or an entire chromosome

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2
Q

Simple dominance

A

If you have the dominant allele you will express the trait

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3
Q

Simple recessive

A

Must have 2 recessive alleles to express the trait

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4
Q

Incomplete dominance

A

A condition in which 1 allele is not completely dominant over another. The third (new) phenotype appears I. Heterozygous

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5
Q

Codominance

A

Condition in which both alleles are expressed in the heterozygote.

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6
Q

What did Mendel’s principles of genetics NOT do?

A

Traits controlled by two or more genes

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7
Q

Polygenic traits

A

Traits controlled by 2 or more genes. Have a wide variety of phenotypes

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8
Q

Multiple allele

A

When there is more than two possible alleles for a trait.

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9
Q

Sex chromosomes

A

Each gamete the egg has receive a X. Where as sperm gamete can either receive an X or Y

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10
Q

Sex-linked traits

A

Genes that are carried on either the X or Y chromosome

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11
Q

X-linked traits

A

Linked on the x-chromosome

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12
Q

What is an example of sex-linked trait?

A

Color blindness

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