Genetics Terms Flashcards

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1
Q

Haploid

A

One full set of chromosomes

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2
Q

Diploid

A

Two full sets of chromosomes

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3
Q

N number

A

The number of different chromosomes

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4
Q

2N

A

Diploid

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5
Q

1N

A

Haploid

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6
Q

What cells are haploid?

A

Gametes

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7
Q

What cells are diploid?

A

Somatic cells

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8
Q

Def Gametes

A

Sex cells

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9
Q

List Gametes

A

Sperm (spermatocytes) and Egg (ovum) cells

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10
Q

Def Somatic cell

A

Body cells

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11
Q

What process? 1N → 2N

A

Fertilization

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12
Q

What process? 1N → 2N

A

Meiosis

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13
Q

What process? 2N → 2N

A

Mitosis

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14
Q

What cells can undergo mitosis?

A

All cells except gametes

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15
Q

What cells can undergo meiosis?

A

Only germ cells

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16
Q

Chromosome

A

A piece of DNA, which contains millions of nucleotide pairs and thousands of genes each

17
Q

Gene

A

A segment of DNA within a chromosome that codes for a specific gene product (protein or RNA)

18
Q

Allele

A

Different versions of genes

19
Q

What causes new alleles?

A

Mutations to genes

20
Q

Sister chromatids

A

A pair of identical chromosomes that are formed after DNA replication during S phase; typically refers to the highly condensed versions of the chromosomes that are visible during M phase

21
Q

Homologous chromosomes

A

Pairs of similar chromosomes that have the same genes but were inherited from different parents

22
Q

Chromatin

A

Loose DNA, found in the nucleus during interphase