Genetics Flashcards

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0
Q

Incomplete Dominance

A

Neither allele is dominant or recessive with respect to each other. Both alleles work in the heterozygous genotype to produce an intermediate phenotype

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1
Q

Natural Selection

A

The process by which those organisms with genetically controlled characteristics, that allow them to be well adapted to their environment, will survive and reproduce to pass on their genes to the next generation

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2
Q

Gene/Point Mutations

A

Changes in a single gene

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3
Q

Mutagens

A

Agents that cause mutations

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4
Q

Progeny

A

The offspring produced

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5
Q

Locus

A

It’s position on a chromosome

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6
Q

Mitosis

A

The cell divides to produce two daughter cells with the same number of chromosomes as the parent cell

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7
Q

Fertilisation

A

The union of two gametes to form a single cell called a zygote

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8
Q

Chromosome Mutations

A

Large changes in the structures or number of one or more chromosome

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9
Q

Mutation

A

A change in the structure or amount of DNA

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10
Q

Genetic Engineering

A

The artificial manipulation or alteration of genes

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11
Q

Meiosis

A

The cell divides to produce 4 daughter cells with half the number of chromosomes as the parent cell

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12
Q

Homozygous

A

The two alleles are the same

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13
Q

Heterozygous

A

The alleles are different

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14
Q

Dominant

A

The allele prevents the recessive allele from working

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15
Q

Genetic Engineering

A

The artificial manipulation or alteration of genes

16
Q

Law of Segregation/ Mendel’s First Law

A

Inherited characteristics are controlled by pairs of factors. At gamete formation the factors separate from each other with only one of the pair being found in each gamete.

17
Q

Law of Independent Assortment/ Mendel’s Second Law

A

When gametes are formed either of a pair of factors is equally likely to combine with either of another pair of factors

18
Q

Linkage

A

Genes are located on the same chromosome

19
Q

Sex Linkage

A

A characteristic is controlled by a gene on the X chromosome and there is no copy on the Y chromosome

20
Q

Evolution

A

Is the way in which living things change genetically to produce new forms of life over long periods of time