QUESTION 17Which statement about a dihybrid cross is true?O 1. It results in a genotypic ratio of 2:1.2. It involves genes located on the sex chromosomes.3. It results in offspring of lower quality than that of the parents.4. It results in two different phenotypes in the F2 generation15. It isa cross between identical double heterozygotes.

Name: QUESTION 17Which statement about a dihybrid cross is true?O 1. It res
Uploaded: 2024-03-20T06:42:55.000Z
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Description: QUESTION 17Which statement about a dihybrid cross is true?O 1. It results in a genotypic ratio of 2:1.2. It involves genes located on the sex chromosomes.3. It results in offspring of lower quality than that of the parents.4. It results in two diffe

A genetic cross that includes two pairs of different and contrasting characters is called the dihybrid cross. The genetic composition of a particular organism Genotype refers to the genetic composition of that organism. While the phenotype refers to the morphological or the external appearance of the organism. The phenotype is dependent on the genotypic composition of that animal.A dihybrid cross is one in which there is a cross between two organisms which are identically hybrid for two traits. These organisms can even be F1 generations. In a dihybrid cross, the phenotypic ratio can be 3:1 and genotypic ratio is 1:2:1, hence first option is wrong. Dihybrid cross does not always involves the sex chromosomes, it can be regarding the autosomes as well, hence the second option is also wrong. Subsequently, the third and fourth options are also wrong as dihybrid crosses do not result in lower offspring quality than the parents. A dihybrid cross is indeed a cross between identical double heterozygotes since it has to be the same species and homozygotes would not result into a hybrid one. Hence, the 5th statement is true.