Meiosis Flashcards

1
Q

Diploid

A

two copies of each chromosome in the cell

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2
Q

Haploid

A

One copy of each chromosome in the cell

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3
Q

Somatic Cells

A

Body cells, every cell in your body that is not a sex cell, Cells that make up your skin, heart, lungs, kidneys, etc. Made via Mitosis

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4
Q

Gametes

A

Sex cells/reproduction cells, Sperm cells (male) Egg cells (female) Made via meiosis

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5
Q

Meiosis Overview

A

Meiosis = Interphase + PMAT and Cytoknesis x2

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6
Q

Independent Assortment

A

produces 2n distinct gametes, where n = the
number of unique chromosomes.

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7
Q

Crossing over

A

multiplies the already huge number of different gamete types produced by independent assortment.

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8
Q

Difference of Mitosis vs. Meiosis

A

Mitosis:
Type of cell divisions
Results in 2 cells
Daughter cells produced are identical to the origional parent cell
1 round of divisions
Produces Somatic Cels
Daughter cells have the same number of chromosomes as the origional parent cell
Daughter Cells produced are diploid

Meiosis:
Type of cell division
Results in 4 vells
Daughter cells produced are different than the original parent cell
There are 2 rounds of division
Produces sex cells (gametes) egg and sperm
Daughter cells have different number of chromosomes as the original parent cell
Daughter cells produced are haploid

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9
Q

Nondisjunction

A

When homologous pairs or sister chromatids fail to separate during either Meiosis I or Meiosis II resulting aneuploidy

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10
Q

Aneuploidy

A

When there are an abnormal amount of chromosomes

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11
Q

Monosomy

A

An individual is lacking chromosomes, usually results in death during fetal development

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12
Q

Trisomy

A

Individual has one additional chromosomes, usually results in something like down syndrome

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