Multicellular organisms definitions Flashcards

1
Q

Allele

A

Different forms of the same gene

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2
Q

Homozygous / true breeding

A

An individual with two copies of the same allele present.

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3
Q

Heterozygous

A

An individual with two different alleles present

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4
Q

Phenotype

A

The physical characteristics of an organism

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5
Q

Dominant

A

An allele that always shows its effects as a phenotype and masks the presence of the other form

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6
Q

Recessive

A

An allele that is masked by the dominant allele i.e. it will only show its effect / show in the phenotype if both alleles are present

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7
Q

Genotype

A

The set of genes (alleles) possessed by an individual

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8
Q

Phenotype ratio

A

The ratio of the appearance of the offspring produced in a genetic cross

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9
Q

Genotype ratio

A

The ratio of genotypes of the offspring produced in a genetic cross

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