genetics Flashcards

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1
Q

genetics

A

Genetics is a branch of biology concerned with the study of genes,

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2
Q

heredity

A

Heredity, also called inheritance or biological inheritance is the passing on of traits from parents to their offspring

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3
Q

inheritance

A

Inheritance is the practice of passing on property, titles, debts, rights, and obligations upon the death of an individual

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4
Q

dominant

A

a dominant trait or gene.

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5
Q

recessive

A

a recessive trait or gene.

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6
Q

allele

A

An allele is a variant form of a given gene

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7
Q

DNA

A

deoxyribonucleic acid

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8
Q

deoxyribonucleic acid

A

A self-replicating material that is present in all living matter, contains genetic information

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9
Q

nucleotides

A

one of the structural components, or building blocks. consists of a base (adenine, thymine, guanine, cytosine) plus a molecule of sugar and one phosphoric acid

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10
Q

base pairing

A

two complementary nitrogenous molecules that are connected by hydrogen bonds.

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11
Q

chargaff’s rule

A

guanine bonds with cytosine, thymine bonds with adenine

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12
Q

nucleic acid

A

a complex organic substance present in living cells

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13
Q

nitrogenous base

A

a nitrogenous base is simply a nitrogen-containing molecule that has the same chemical properties as a base.

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14
Q

base-pairing rule

A

states that adenine (A) bonds with thymine (T) and that guanine (G) bonds with cytosine (A)

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15
Q

double helix

A

the structures formed by double-stranded molecules of nucleic acids such as DNA

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16
Q

complementary base-pairing

A

states that adenine (A) bonds with thymine (T) and that guanine (G) bonds with cytosine (A)

17
Q

triplet

A

The base sequence of three nucleotides

18
Q

amino acid

A

code for triplet

19
Q

ribose

A

Ribose is a kind of sugar that is produced by the body.

20
Q

uracil

A

a type of nitrogenous base

21
Q

codon

A

the triplet code for a nucleotide in mRNA

22
Q

messenger RNA (mRNA)

A

s a large family of RNA molecules that convey genetic information from DNA to the ribosome, where they specify the amino acid sequence of the protein products of gene expression.

23
Q

transcription

A

the process in which a copy of the DNA strand is formed as mRNA

24
Q

locus

A

a particular position or place where something occurs or is situated.

25
Q

linked

A

genes that are located on the same chromosome

26
Q

genome

A

the total set of genes within an individual or cell

27
Q

genomics

A

the study of genomes

28
Q

genome map

A

describes the order of genes and the space between them in each chromosome

29
Q

epigenetics

A

the study of changes in organisms caused by modification of gene expression rather than alteration of the genetic code itself.

30
Q

gene sequencing

A

identifies the order of nucleotides along a gene.