Module 6 Flashcards

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1
Q

Genetics

A

The science that studies how characteristics are passed from parent to offspring

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2
Q

Genetic factors

A

The general guideline of traits determined by a person’s DNA

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3
Q

Environmental factors

A

Those “nonbiological” factors that are involved in a person’s surroundings such as the nature of the person’s parents, the person’s friends, and the person’s behavioral choices. They also include things like exposure to chemicals, molds, extreme weather conditions, and allergens.

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4
Q

Spiritual factors

A

The factors in a person’s life that are determined by the quality of his or her relationship with God

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5
Q

Gene

A

The basic unit of heredity; a section of DNA that contains the code to produce a protein or a portion of a protein, thereby causing a trait

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6
Q

Chromosome

A

The condensed threads of chromatin (DNA coiled around and supported by proteins) found in the nucleus of the cell

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7
Q

Chromatin

A

Long strands of clusters of DNA and proteins in the nucleus of a cell

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8
Q

DNA replication

A

The process by which two identical DNA molecules are produc from one original DNA molecule

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9
Q

Chromosome

A

Condensed threads of chromatin found in the nucleus of the cell

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10
Q

Chromatid

A

One of the two identical copies of a replicated chromosome joined by a centromere

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11
Q

Centromere

A

The region where two sister chromatids are joined tightly together

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12
Q

Triplet

A

A three-base sequence on DNA

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13
Q

Codon

A

A three-base sequence on mRNA that codes for a specific amino acid

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14
Q

Anticodon

A

A three-base sequence on tRNA

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15
Q

Mitosis

A

A process of asexual reproduction in eukaryotic cells

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16
Q

Interphase

A

The time interval between cellular reproductions

17
Q

Cytokinesis

A

The process, usually following mitosis or meiosis, in which the cytoplasm of a cell is divided in two

18
Q

Karyotype

A

The figure produced when the chromosomes of a species during metaphase are arranged according to their homologous pairs

19
Q

Diploid cell

A

A cell with chromosomes that come in homologous pairs or two sets of chromosomes

20
Q

Haploid cell

A

A cell that has only one representative of each chromosome pair or half the total number of chromosomes.

21
Q

iploid number (2n)

A

The total number of chromosomes in a diploid cell

22
Q

Haploid number (n)

A

The number of homologous pairs in a diploid cell (½ the total)

23
Q

Meiosis

A

The process by which a diploid (2) cell forms gametes (n)

24
Q

Gametes

A

Haploid cells (n) produced by diploid cells (2n) for the purpose of sexual reproduction

25
Q

Zygote

A

The result of sexual reproduction when each parent contributes half of the DNA necessary for the offspring

26
Q

Tetrad

A

Two homologous chromosomes consisting of four chromatids, two siste chromatids in each chromosome

27
Q

Crossing over

A

The exchange of genes between homologous chromosomes