Definitions Flashcards

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1
Q

Define: chromosome

A

A structure found inside the nucleus of a cell

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2
Q

Define: chromatin

A

a structural complex that condenses DNA so that it will fit within the nucleus

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3
Q

Define: sister chromatids

A

two identical structures that are collectively called chromosomes

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4
Q

Define: centromere

A

structure in a chromosome that holds together the two chromatids

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5
Q

Define: spindle fiber

A

a network of filaments that are formed during the cell division process

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6
Q

Define: genes

A

The basic unit of heredity passed from parent to child

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7
Q

Define: diploid

A

a cell that contains two copies of each chromosome

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8
Q

Define: haploid

A

the presence of a single set of chromosomes in an organism’s cells

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9
Q

Define: gametes

A

a reproductive cell of an animal or plant

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10
Q

Define: zygote

A

a cell formed by the union of two gametes

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11
Q

Define: crossing over

A

a cellular process that happens during meiosis when chromosomes of the same type are lined up

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12
Q

Define: independent assortment

A

how different genes independently separate from one another when reproductive cells develop

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