Gametogenesis Flashcards

1
Q

Gametogenesis

A

The series of meiotic and mitotic divisions that occur in the gonads resulting in the formation of gametes; spermatogenesis and oogenesis are both forms of gametogenesis

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2
Q

Gamete

A

Reproductive cell of an organism

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3
Q

Spermatogenesis

A

The formation of spermatozoa in animals. Spermatogonia stem cells are formed during gestation and present at birth through to early adolescence in an inactive state, during adolescence, hormones from the anterior pituitary gland cause the activation of these cells and the production of viable sperm

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4
Q

Oogenesis

A

The differentiation of the ovum into a cell competent to further develop when fertilised. At birth, an ovary contains all the cells that will ever develop into eggs

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5
Q

Primary Oocyte

A

Diploid. Begin meiosis but remain in prophase 1 until a female matures sexually; once matured a primary oocyte completes meiosis 1 each month to form a secondary oocyte and a structure called a polar body

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6
Q

Diploid

A

Contains two complete sets of chromosomes

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7
Q

Secondary Oocyte

A

Haploid formed after meiosis 1

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8
Q

Haploid

A

Contains a single set of chromosomes

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9
Q

Cytokinesis

A

The physical process of cell division, divides the parent cell into two daughter cells; is even and almost all cytoplasm goes to a secondary oocyte

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10
Q

Centromere

A

non-coding, point of attachment of miotic spindles

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11
Q

Telomere

A

non-coding, offers protection to chromosome; a repetitive DNA sequence

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12
Q

Spindle Fibres

A

Form a protein structure that divides the genetic material in a cell

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