Dominant & Recessive

Front

What are dominant alleles?

Back

Dominant alleles are versions of a gene that can mask the effect of a recessive allele. They are represented by uppercase letters.

Front

What are recessive alleles?

Back

Recessive alleles are versions of a gene that can be masked by dominant alleles. They are represented by lowercase letters.

Front

What does the genotype 'TT' represent?

Back

The genotype 'TT' represents a homozygous dominant condition.

Front

What does the genotype 'Tt' represent?

Back

The genotype 'Tt' represents a heterozygous condition.

Front

What does the genotype 'tt' represent?

Back

The genotype 'tt' represents a homozygous recessive condition.

Front

How are dominant alleles written?

Back

Dominant alleles are always written with uppercase letters.

Front

How are recessive alleles written?

Back

Recessive alleles are always written with lowercase letters.

Front

If a plant has the genotype 'Dd', what can we say about its alleles?

Back

The plant has one dominant allele (D) and one recessive allele (d).

Front

What is the phenotype of a plant with genotype 'TT'?

Back

The phenotype of a plant with genotype 'TT' is dominant.

Front

What is the phenotype of a plant with genotype 'tt'?

Back

The phenotype of a plant with genotype 'tt' is recessive.