Heredity Flashcards

1
Q

the passing of genetic traits from parent to offspring.

A

Heredity

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2
Q

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

A

Dominant trait

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3
Q

a trait that reappears in the secong generation after disappearing in the first generation when parents with different traits are bred.

A

Recessive trait

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4
Q

one set of instrutions for an inherited trait.

A

Genes

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5
Q

one of the allternative forms of a gene that governs a characteristic, such as hair color.

A

Alleles

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6
Q

an organism’s apperence or other detectable characteristic.

A

phenotype

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7
Q

the entire genetic makeup of an organism; also the combination of genes for one or more specific traits.

A

genotype

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8
Q

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

A

Probablity

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9
Q

a process in cell division during which the number of chromosomes decrease to half the original number by two divisions of the nucleus, which results in the production of sex cells.

A

meiosis

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10
Q

one of the pair of chromosomes that determine the sex of an individual.

A

sex chromosomes

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11
Q

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

A

pedigree

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12
Q

Deoxyribonucleic acid, a molecule that is present in all living cells and that contains the information that determines the traits that a living thing inherits and needs to live.

A

DNA

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13
Q

in a nucleic-acid chain,a subunit that consists of a sugar, a phosphate, and a nitrogenous base.

A

nucleotide

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14
Q

a change in the nucleotide-base sequence of a gene or DNA molecule.

A

mutations

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15
Q

ribonucleic acid, a molecule that is present in all living cells and that plays a role in protein production.

A

RNA

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