Mendelian Genetics Flashcards

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1
Q

Meiosis

A

A cell division where chromosome numbers are reduced by half and the daughter cells are destruct genetically from their parents.

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2
Q

Mitosis

A

Stage in the cell cycle where 1 thing of DNA is equally distributed between 2 identical daughter cells.

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3
Q

Genetics

A

Study of patterns in heredity and the variation of organisms.

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4
Q

Cross pollination

A

Reproduction process in which pollen from one plant is transferred to the stigma of another plant.

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5
Q

Allele

A

The letters that show the genes from mom or dad. Alternate versions of a trait.

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6
Q

Homozygous

A

A gene pair where 2 alleles code for the same trait (same: dominant AA recessive aa)

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7
Q

Law of segregation

A

States that pairs of genes separate in meiosis and each gamete receives a gene from each pair.

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8
Q

Hapliod

A

Having only one chromosome of each homologous pair. (Half)

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9
Q

Diploid

A

Cell that has both chromosomes of a homologous pair.

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10
Q

Trait

A

A characteristic

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11
Q

Dominant

A

An allele that ranks higher then another allele for the same characteristic.

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12
Q

Genotype

A

Genetic makeup of an organism.

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13
Q

Heterozygous

A

A gene pair where two alleles don’t code for the same trait (different Aa)

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14
Q

Law of independent assortment

A

Law that states pairs of genes separate independently of one another in meiosis.

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15
Q

Gametes

A

Reproductive cell (sperm, male: ova/egg cells, female)

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16
Q

Heredity

A

Transmission of traits from parents to their offspring. (Mom has brown eyes and daughter has brown eyes)

17
Q

Self pollination

A

Pollination using the same flower, flowers from the same plant, or two plant’s genetically the same.

18
Q

Recessive

A

An allele that is ranked lower than another allele for the same characteristic.

19
Q

Phenotype

A

External appearance of an organism that is determined by the individuals genotype.

20
Q

Punnet square

A

A way to show all possible combinations of genes from 2 parents that can be passed down to offspring.

21
Q

Monohybrid cross

A

Crosses that deal with 1 trait

22
Q

Dihybrid cross

A

A cross of 2 pairs of genes.

23
Q

Incomplete dominance

A

Heterozygous individuals express both simultaneously with blending.

24
Q

Codominance cross

A

Heterozygous individual expresses both simultaneously without blending.