You have identified a plant in your garden with a new flower color. You want to determine if this phenotype is dominant or recessive. Which cross would tell you this?

Question

Biology

Shayna Prince

29 June, 02:57

You have identified a plant in your garden with a new flower color. You want to determine if this phenotype is dominant or recessive. Which cross would tell you this?

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Answers (2)

Know the Answer?

Cyrus Chan · Answer 1

Test cross

Explanation:

A testcross is a cross between an organism of unknown genotype with a double recessive individual. One way of establishing the genotype of a plant bearing the characteristics of the dominant gene is by self pollination. If all the offspring are similar, then the unknown genotype is homozygous dominant. If the offspring are different at a ratio of 1:1 then the unknown genotype is heterozygous.

Moises Booker · Answer 2

A monohybrid cross will be able to determine whether the trait is dominant or recessive.

Explanation:

In order to determine whether the flower colour is dominant or recessive, we should cross the plant with the other type of the plant with different flower color. The results from the cross could be illustrated in a punnet square and will be able to determine whether the trait is dominant or recessive. If the plant will be recessive then it will be seen in lesser number in the upcoming population.