In Drosophila, the genes for color of body and color of eyes are situated on _______.
1. both the sex chromosomes
2. autosomes 
3. Y-chromosome 
4. X-chromosome 

Subtopic:  Linkage | Recombination Gene Mapping |
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A low frequency recombination indicates that the genes are: 
1. Located far apart from each other 
2. Located close to each other 
3. Not linked 
4. Present on different c

Subtopic:  Linkage | Recombination Gene Mapping |
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In a test cross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant type offspring. This indicates:
1. chromosomes failed to separate during meiosis
2. the two genes are linked and present on the same chromosome
3. both of the characters are controlled by more than one gene
4. the two genes are located on two different chromosomes
Subtopic:  Linkage | Recombination Gene Mapping |
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Which of the following statements is not true of two genes that show 50% recombination frequency?

1. The genes are tightly linked.
2. The genes show independent assortment.
3. If the genes are present on the same chromosome, they undergo more than one crossing-over in every meiosis.
4. The genes may be on different chromosomes.

Subtopic:  Recombination Gene Mapping |
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