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What chromosome were the genes located on that were used by Morgan in his dihybrid cross?

What chromosome were the genes located on that were used by Morgan in his dihybrid cross? Correct Answer X chromosome

The genes were located on X-chromosome. These are called sex-linked genes because their expression depends on the sex of the fly. The X chromosome is present in copies of two in females, but the males have only one copy of X. Thus, a recessive mutant might remain suppressed in females, but the males will always exhibit the phenotype.

Related Questions

Consider the following statements and choose the correct answer:
1. In the phenomenon of linkage and crossing over, the genes are arranged in a linear order in a chromosome
2. The linkage groups in an organism are equivalent to the number of chromosome pairs
3. The chances of crossing over are more between two closely placed genes as compared to the genes placed in far proximity
4. The position of genes is very definite in the chromatid
Consider the following statements regarding the theory of linkage and choose the correct answer:
1. Genes are arranged in a linear fashion in the chromosomes
2. Genes that show linkage are situated in the chromosome
3. Linked genes remain in their original combination during the course of inheritance
4. The genes which are widely separated show strong linkage, while those closely located, have more chances to get separated by crossing over
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What was the observation made by Morgan based on his dihybrid crosses?
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