DNA, alleles, genes and chromosones

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12 Terms

1

DNA

Deoxyribonucleic acid. A molecule that carries genetic information and makes up chromosomes

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2

Chromosones

A strand of DNA and stabilizing proteins condensed into a threadlike structure

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3

Genes

A unit of heredity, a sequence of DNA that codes for a protein

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4

Allele

A variant of a gene

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5

What is neuclotides made up of?

sugar, phosphate, and a base

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6

Four types of bases

Adenine, Thymine, Cytosine, Guanine

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7

Homologous chromosomes

pairs of chromosomes containing the same genes, one from each parent.

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8

Diploid

having two sets of chromosomes in a cell

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9

Haploid

having one set of chromosomes in a cell

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10

Heterozygous

Different copies of a gene

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11

Homozygous

the same copies for a gene

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12

Locus

the same position on homologous chromosomes

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