Question bank5.1 Inheritance

5.1 Inheritance

In tomato plants, the allele for red fruit ( $R\text{R}$ ) is dominant to the allele for yellow fruit ( $r\text{r}$ ).

A tomato plant has yellow fruit.

Which statement describes the genotype of this plant?

[1]

It is heterozygous, because it has one allele of each type.

It could be either homozygous or heterozygous for fruit colour.

It is homozygous dominant, because yellow is its phenotype.

It is homozygous recessive, as it has two $r\text{r}$ alleles.

In tomato plants, the allele for red fruit ( $R\text{R}$ ) is dominant to the allele for yellow fruit ( $r\text{r}$ ).

A tomato plant has yellow fruit.

Which statement describes the genotype of this plant?

It is heterozygous, because it has one allele of each type.

It could be either homozygous or heterozygous for fruit colour.

It is homozygous dominant, because yellow is its phenotype.

It is homozygous recessive, as it has two $r\text{r}$ alleles.

5.1 Inheritance Questions