Biology Unit 6 Flashcards

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1
Q

Gregor Mendel

A

Scientist who founded genetics

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2
Q

Trait

A

A specific characteristic

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3
Q

Gene

A

Genetic information for a trait

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4
Q

Alleles

A

The alternate forms of a gene

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5
Q

Gamete

A

Sex Cell

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6
Q

Zygote

A

Fertilized egg cell

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7
Q

Fertilization

A

The process of a male gamete giving genes to a female gamete

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7
Q

True breeding

A

Having the same alleles for a trait

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8
Q

Monohybrid cross

A

A cross between two organisms while only focusing on 1 trait

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9
Q

Hybrid

A

Different alleles for a trait

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10
Q

Dihybrid cross

A

Monohybrid cross but with two or more traits

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11
Q

Punett Square

A

A method of listing out the possible genotypes of a trait in the offspring of two parents

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12
Q

P

A

Parent Generation, true-bred

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13
Q

F1

A

First Generation, Hybrid of P

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14
Q

F2

A

Second Generation, F1 is self bred

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15
Q

Dominant

A

The Allele that overwrites others

16
Q

Recessive

A

The allele that is overwritten

17
Q

Homozygous

A

Has two same alleles for a trait

18
Q

Heterozygous

A

Has two different alleles for a trait

19
Q

Codominance

A

Both alleles are expressed

20
Q

Incomplete dominance

A

Alleles are “mixed”

21
Q

Epistasis

A

The expression of one gene is controlled by another

22
Q

Polygenic Trait

A

A trait that is determined by multiple genes

23
Q

Nondisjunction

A

Failure of chromosomes/chromatids to separate during meiosis

24
Q

Pleiotropy

A

One gene controls has multiple effects

25
Q

Law of independent assortment

A

Genes separate independently of another

26
Q

Law of segregation

A

During meiosis, each gene separates from another

27
Q

Law of Dominance

A

There are dominant and recessive traits