- 1(current)
Q. No.Morgan and his group observed when the two genes in a dihybrid cross were situated on the same chromosome, the proportion of parental gene combinations were much higher than the non-parental type, this is due to
1. Independent assortment
2. Linkage
3. Crossing over
4. Competence
Which one of the following statement is incorrect?
| 1. | Sturtevant used the frequency of recombination between gene pairs on the same chromosome as a measure of the distance between genes |
| 2. | Sutton and Boveri argued that the pairing and separation of a pair of chromosomes would lead to the segregation of a pair of factors they carried. |
| 3. | Y-linked genes are holandric |
| 4. | 7 : 1 : 1 : 7 as linkage ratio in case of dihybrid test cross means that there are 8 parental and 8 recombinant plants |
What is incorrect for genetic maps?
1. Alfred Sturtevant prepared it for the first time using monohybrid test cross
2. It is a measure of the distance between genes present on the same chromosome
3. Stronger the linkage lesser is the distance between two genes
4. It was extensively used in the case of the Human Genome Sequencing Project
Genes for which of the following characters in Drosophila were found to be very tightly linked by Morgan?
1. Eye colour and wing size
2. Body colour and wing size
3. Wing colour and eye colour
4. Body colour and eye colour
- 1(current)
Q. No.
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