bio meiosis Flashcards

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1
Q

Genetics

A

The scientific study of heredity

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2
Q

Trait

A

specific characteristic of an individual

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3
Q

Gene

A

A segment of DNA on a chromosome that codes for a specific trait

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4
Q

Allele

A

Different forms of a gene

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5
Q

Gametes

A

Reproductive cells

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6
Q

Probability

A

Likelihood that a offspring will have a particular trait

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7
Q

Homozygous

A

Having two identical alleles for a particular gene

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8
Q

Heterozygous

A

having two different alleles for a trait

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9
Q

Phenotype

A

An organism’s physical appearance, or visible traits.

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10
Q

Genotype

A

An organism’s genetic makeup, or allele combinations.

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11
Q

dominant allele

A

An allele whose trait always shows up in the organism when the allele is present.

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12
Q

recessive allele

A

An allele that is hidden whenever the dominant allele is present

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13
Q

independent assortment

A

Independent segregation of genes during the formation of gametes

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14
Q

incomplete dominance

A

Situation in which one allele is not completely dominant over another allele

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15
Q

Condominance

A

A condition in which neither of two alleles of a gene is dominant or recessive.

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16
Q

multiple alleles

A

A gene that has more than two alleles

17
Q

polygenic traits

A

traits controlled by two or more genes

18
Q

homologous chromosomes

A

Chromosomes that have the same sequence of genes and the same structure

19
Q

Diploid

A

2 sets of chromosomes

20
Q

Haploid

A

An organism or cell having only one complete set of chromosomes.

21
Q

Meiosis

A

Cell division that produces reproductive cells in sexually reproducing organisms

22
Q

crosing over

A

chromosomes swap genetic information

23
Q

Fertilization

A

Process in sexual reproduction in which male and female reproductive cells join to form a new cell