Consider a haploid male of a certain ant species. This male’s karyotype contains a total of...
Consider a haploid male of a certain ant species. This male’s karyotype contains a total of 3 non- homologous chromosomes. It was estimated that the genome of this ant species contains approximately 12,000 protein-coding genes.
a. Assuming genes are distributed evenly across chromosomes, on average how many genes do you expected to find on a given chromosome of this male ant?
b. What is the number of allele the male ant have for each of its gene? Briefly explain your answer in your own words.
c. What types of gametes can this male produce (e.g. recombinant, non-recombinant, or both)? Briefly explain your answer in your own words.
d. In this species, previous experiments indicated that two genes, A and B, have a recombination frequency of 23%. You want to verify this statistics by conducting your own test cross experiment. Describe in a complete sentence the expected phenotypic ratio of the offspring from a test cross for these two genes, given the statistics. Mention recombinant and parental phenotypes.
Homework Answers
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Consider a haploid male of a certain ant species. This male’s
karyotype contains a total of...
The results for the F2 progeny are shown for a F1 cross using the two X-linked...
The results for the F2 progeny are shown for a F1 cross using
the two X-linked markers:
w+ and m+.
As shown in the figure, the F1 cross is between the following
two parents:
- a phenotypically wild-type (red eye, full wing), heterozygous
female: w+m+/wm
- a double mutant male (white eye, miniature wing):
wm/Y
Answer the following questions:
1) In the F1 cross, can you infer the genotype for the phenotype
in the female? Why or why not?
2)...
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The results for the F2 progeny are shown for a F1 cross using
the two X-linked markers:
w+ and m+.
As shown in the figure, the F1 cross is between the following
two parents:
- a phenotypically wild-type (red eye, full wing), heterozygous
female: w+m+/wm
- a double mutant male (white eye, miniature wing):
wm/Y
Answer the following questions:
1) In the F1 cross, can you infer the genotype for the phenotype
in the female? Why or why not?
2)...
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