Variation and Inheritance

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Match the word to its correct definitions.

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Phenotype

Genotype

Allele

Homozygous

Heterozygous

P

F1

F2

Recessive

Dominant

Gene

Chromosome

DNA

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When both alleles are the same.

2nd generation

Masks the recessive phenotype so its phenotype will always show up if it is present. Represented by a capital case letter.

Is a molecule that carries genetic instructions.

Phenotype is masked by the dominant phenotype so does not show up. Represented by a lower case letter.

1st generation

Is made of DNA, is part of a chromosome and holds genetic information about a characteristic.

The different forms of a gene.

The physical characteristics possessed by an organism such as coat colour.

It is a threadlike structure which contains DNA.

Parent

When both alleles are different.

The complete set of genes which control inherited characteristics.


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