Chapter 5 - Heredity Flashcards

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1
Q

Dominant Trait

A

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

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2
Q

Heredity

A

Passing of traits from parent to offspring

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3
Q

Recessive Trait

A

A trait that reappears in the second generation after disappearing in the first generation

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4
Q

Gene

A

A set of instructions for an inherited trait

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5
Q

Allele

A

One of the alternative forms of a gene that governs a characteristic

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6
Q

Phenotype

A

An organism’s appearance or other detectable characteristic

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7
Q

Genotype

A

The entire genetic makeup of an organism

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8
Q

Probability

A

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

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9
Q

Homologous chromosomes

A

Chromosomes that have the same sequence and structure

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10
Q

Meiosis

A

The amount of chromosomes decreased to half the original number by two divisions

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11
Q

Sex chromosomes

A

One of the pair of chromosomes 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 the generations of a family

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