Science Flashcards

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1
Q

heredity

A

the passing of genetic traits from parent to offspring

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2
Q

dominate trait

A

the trait observed in the first generation when parents that have different traits are bred

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3
Q

recessive trait

A

a trait that appears in the second generation after dis spearing in the first generation when parents with different traits are bred

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4
Q

gene

A

one set of instructions fro an inherited trait

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5
Q

allele

A

one of the alternative forms of a gene that governs a chars tic such as hair color

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6
Q

phenotype

A

an organisms appearance or other detectable chars tic

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7
Q

genotype

A

the entire genetic makeup of an organism

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8
Q

proballity

A

the likelihood that a possible future event will occur in any given instance of the event

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9
Q

homologous chromes

A

chromosomes that have that sequence of genes and the same structure

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10
Q

meiosis

A

a process in cell division during which the number of chromes decreases to half

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11
Q

sex chrosome

A

one of the pairs of chromosome that determine the sex of an individual

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12
Q

pedigree

A

a diagram that shows the occurrence of a genetic trait in several generations of a family

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