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Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
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oaqadir oaqadir
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11 years ago
What's a dihybrid cross, and how would the phenotype ratios be different?
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#1
11 years ago
A dihybrid cross is a cross involving two homozygous chromosomes. For e.g, T for tall and t for short. TT + tt if crossed with each other will make
         Tt Tt Tt Tt. These are all tall people

A monohybrid cross involves two offspring frrom a dihybrid cross
Tt Tt if crossed would make
TT Tt Tt tt which is 1 2 1
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#2
11 years ago
The first answer is wrong. A monohybrid is a cross between two individuals that are homozygous for a particular trait, producing offspring that are all heterozygotes for that trait. On the other hand, a dihybrid cross is the process of mating two individuals that are both homozygous for exactly two traits, producing all heterozygotes.

In both types of crosses, one parent must be homozygous dominant and one must be homozygous recessive.
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