DNA and Genetics (ms Assari) Flashcards

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1
Q

Alleles

A

Different versions of the same gene

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2
Q

Asexual reproduction

A

Reproduction which requires only one parent; results in clones

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3
Q

Cancer

A

A disease which occurs at the result of cell changes that lead to uncontrolled growth and division

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4
Q

Clone

A

An organism which is genetically identical to its parent

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5
Q

Continuous variation

A

Variation which can take any value between a minimum and a maximum

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6
Q

Discontinuous variation

A

Characteristic which falls into distinct groups

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7
Q

Dominant allele

A

Version of a gene whose characterises is always expressed if present in the genotype

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8
Q

Environmental variation

A

Variation caused by the environment

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9
Q

Fertilisation

A

Joining together of two gametes

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10
Q

Gametes

A

Sex cells

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11
Q

Genetic cross

A

Technique used to show the possible characteristic of an offspring

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12
Q

Genetic variation

A

Variation caused by an organisms genetic material

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13
Q

Genome

A

All the genetic material present in an organism

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14
Q

Genotype

A

The combination of alleles present in an organism

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15
Q

Mutation

A

Change in the sequence of dna bases

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16
Q

Punnets square

A

Diagram used to show the possible genetic makeup of offspring, based on a mothers and a fathers genes

17
Q

Recessive allele

A

Version if a gene whose characteristic is only expressed if two copies are present in the genotype

18
Q

Sexual reproduction

A

Reproduction requiring two parents, which results in variation

19
Q

Variation

A

Differences within a species