Question

4. You decide to experiment with your gardening this year. You cross one of your red tulips with

another one of your red tulips. The result is 25 red tulips and 8 white tulips. Based on this
information, what are the genotypes of the red parent tulips?

Answer 1

According to the information, the parent red tulip plants have a heterozygous genotype for red colour. The allele for red colour is dominant whereas the allele for white colour is recessive. Hence, the recessive allele will be masked by the dominant allele and the parent plants will have red tulips.

When heterozygous red tulip plants will be crossed, then 25% red homozygous plants will be made, 50 % would be red heterozygous plants whereas 25% would be white homozygous.