Meiosis And Sexual Reproduction Flashcards

1
Q

Heredity

A

The study of how traits are passed from parent to offspring

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2
Q

Traits

A

Characteristics

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3
Q

Gene

A

A section of a chromosome that determines a particular trait

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4
Q

Homologous chromosomes

A

Two chromosomes containing genes for the same traits

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5
Q

Allele

A

A version of a trait

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6
Q

Heterozygous/Hybrid

A

When an individual inherits two alleles that are different they are said to be this

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7
Q

Homozygous/ purebred

A

When an individual inherits two alleles that are the same they are said to be this one

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8
Q

Phenotype

A

The physical appearance of an individual

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9
Q

Genotype

A

The genetic makeup of an individual

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10
Q

Dominant

A

An allele that will mask or cover other, weaker alleles

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11
Q

Recessive

A

An allele that will only be expressed in the absence of a dominant trait

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12
Q

Mendelian trait

A

A trait determined by only one gene

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13
Q

Incomplete dominance

A

A form of inheritance that occurs when one when one allele is not completely dominant over the other

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14
Q

Co-dominance

A

When two alleles share dominance and are expressed simultaneously

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15
Q

Sex-linked

A

A gene that is located on the 23rd pair of chromosomes

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16
Q

Polygenic

A

Some traits are determined by multiple genes. If so, they are called this

17
Q

Always written in uppercase
-always shows up

A

Dominant

18
Q

Always written in lower case
-often covered up by a dominant gene

A

Recessive gene

19
Q

Homozygous dominant=

A

Pure dominant

20
Q

Homozygous recessive=

A

Pure recessive

21
Q

Have both uppercase and lowercase or art

A

Heterozygous

22
Q

Tool that shows the possible combination of genes

A

Punnet square

23
Q

Amount of chromosomes in each plant cell? The amount in a plant cell gamete?

A

32 then 16

24
Q

How many chromosomes in a horse cell? In a horse gamete

A

64 and 32