Mendelian Genetics Quiz Flashcards

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1
Q

Meiosis

A

Type of cell division where chromosomes number is reduced by half and the daughter cells are genetically distinct from the parents

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

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2
Q

Mitosis

A

mitosis divides a cell’s nucleus into two nuclei, each with an identical set of DNA

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

Mendels factors are now called alleles. Controls the characteristics
The letters that show the genes from mom or dad. Alternate versions of a trait.
(One letter?)

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6
Q

Homozygous

A

When both pairs of an allele are alike, the organism is homozygous for that characteristic. An organism can be homozygous dominant. Both letters are the SAME!

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7
Q

Law of segregation

A

When 2 gametes combine during fertilization, the offspring have two factors controlling a specific trait.

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8
Q

Haploid

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

referring to an allele that masks the presence of another allele for the same characteristic, most common in population

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12
Q

Genotype

A

genetic makeup of an organism, consists of alleles that the organism inherits from its parents (the letters)

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13
Q

Heterozygous

A

When the two alleles in the pair are different, the organism is heterozygous, this means 1 UPPERCASE and 1 LOWERCASE

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14
Q

Law of independent assortment

A

States that factors for different characteristics are distributed to gametes independently.

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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

referring to an allele that is masked by the presence of another allele for the same characteristic.

19
Q

Phenotype

A

Appearance of an organism as a result of its genotype.
Ex: PP, Pp = purple flower
pp = white flower

20
Q

Genotype

A

genetic makeup of an organism, consists of alleles that the organism inherits from its parents (the letters)

21
Q

Punnett square

A

a way to show all the possible gene combinations 2 parents can give their offspring

22
Q

Monohybrid cross

A

Crosses that deal with only ONE trait

23
Q

Dihybrid cross

A

A cross that involves TWO pairs of genes, rather than 1 (monohybrid cross)

24
Q

Codominance

A

a heterozygous individual expresses both simultaneously WITHOUT blending
use all capital letters

25
Q

Incomplete dominance

A

heterozygous individual expresses both simultaneously WITH blending
ex: red flower & white flower = pink flower

26
Q

Gene

A

a segment of DNA that contains coding for a polypeptide or protein; unit of hereditary information

27
Q

Molecular genetics

A

study of the structure and function of chromosomes and genes.

28
Q

Test cross

A

used to determine whether an organism is TTor Tt.

a test cross is when the unknown is crossed with tt