2. Let's assume you did a dihybrid cross of homozygous dpy-5 hermaphrodites and homozygous him-5 males. You let the F1 hermaphrodites to self-fertilize and collected the F2 progeny. What are the ratios of the following genotypes among all the F2 progeny? In the table below, "dpy-5" or "him-5" indicates the mutant allele and the plus sign "+" indicates wildtype allele. The slash "/" separates two alleles of the same locus. The semicolon "," separates different chromosomes. Use words or any type of diagrams that we learned in the class to show your work. Genotype dpy-5/dpy-5; him-5/him-5 dpy-5/+; him-5/him-5 +/+; him-5/him-5 dpy-5/dpy-5; him-5/+ dpy-5/+; him-5/+ +/+; him-5/+ dpy-5/dpy-5; +/+ dpy-5/+; ++ +/+; +/+; Ratio I

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Chapter20: Chromosomes And Human Genetics
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Problem 2CT: Human sex chromosomes are XX for females and XY for males. a. With respect to an X-linked gene, how...
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2. Let's assume you did a dihybrid cross of homozygous dpy-5 hermaphrodites and
homozygous him-5 males. You let the F1 hermaphrodites to self-fertilize and collected the F2
progeny. What are the ratios of the following genotypes among all the F2 progeny? In the
table below, "dpy-5" or "him-5" indicates the mutant allele and the plus sign "+" indicates
wildtype allele. The slash "/" separates two alleles of the same locus. The semicolon ","
separates different chromosomes. Use words or any type of diagrams that we learned in the
class to show your work.
Genotype
dpy-5/dpy-5; him-5/him-5
dpy-5/+; him-5/him-5
+/+; him-5/him-5
dpy-5/dpy-5; him-5/+
dpy-5/+; him-5/+
+/+; him-5/+
dpy-5/dpy-5; +/+
dpy-5/+; ++
+/+; +/+;
Ratio
I
Transcribed Image Text:2. Let's assume you did a dihybrid cross of homozygous dpy-5 hermaphrodites and homozygous him-5 males. You let the F1 hermaphrodites to self-fertilize and collected the F2 progeny. What are the ratios of the following genotypes among all the F2 progeny? In the table below, "dpy-5" or "him-5" indicates the mutant allele and the plus sign "+" indicates wildtype allele. The slash "/" separates two alleles of the same locus. The semicolon "," separates different chromosomes. Use words or any type of diagrams that we learned in the class to show your work. Genotype dpy-5/dpy-5; him-5/him-5 dpy-5/+; him-5/him-5 +/+; him-5/him-5 dpy-5/dpy-5; him-5/+ dpy-5/+; him-5/+ +/+; him-5/+ dpy-5/dpy-5; +/+ dpy-5/+; ++ +/+; +/+; Ratio I
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