GATE XL · 2017 · XL-R
Question 49: Genetics and genomics
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Question 49
XL-RNAT2 marksNeeds review
In a hypothetical trihybrid cross of three loci (viz. A, B, C), all were inherited in a complete dominant manner over their recessive alleles a, b, c, respectively. When a test cross between F1 and parent ‘aabbcc’ was performed, following genotypes of eight phenotypically distinct classes were observed with respective numbers
Class | Genotype | Number |
|---|---|---|
1 | ABC | 412 |
2 | abc | 406 |
3 | Abc | 85 |
4 | aBC | 80 |
5 | ABc | 08 |
6 | abC | 07 |
7 | AbC | 01 |
8 | aBc | 01 |
The genetic distance (up to one decimal) between A and C loci will be ________ cM.
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2017XL-R
GATE XL 2017 · Paper 1
Life Sciences · Original paper archive
- Section
- Section XL-R
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
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