Mendel and Simple Genetics Vocabulary

Two different versions of the same genes are called

• Allele

• Gene

• Phenotype

• Genotype

If someone has two copies of the same allele they are

• Dominant

• Recessive

• Homozygous

• Heterozygous

If someone has two copies of the different allele they are

• Dominant

• Recessive

• Heterozygous

• Homozygous

Your ________ is what you look like

• Dominant

• Recessive

• Phenotype

• Genotype

_________means the combination of alleles you have.

• Dominant

• Recessive

• Genotype

• Phenotype

Some alleles are _________ this means that you need two copies of the allele to have that characteristic.

• Dominant

• Recessive

• Phenotype

• Genotype

Some alleles are ________ this means you only need one or more copies of the allele to have that characteristic.

• Dominant

• Recessive

• Homozygous

• Heterozygous

________ alleles are always written as capital letters.

• Dominant

• Recessive

• Homozygous

• Heterozygous

________alleles are always written a lower case letters.

• Dominant

• Recessive

• Heterozygous

• Homozygous

The allele for brown eyes is dominant it has the letter B

The allele for blue eyes is recessive and it has the letter b

A man has the genotype Bb

What colour are his eyes and is he homozygous or heterozygous for this allele?

• blue, heterozygous

• blue, homozygous

• brown, heterozygous

• brown, homozygous

Tags

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