a) If 600 progeny were produced, determine the phenotypes and proportions of eac
ID: 57014 • Letter: A
Question
a) If 600 progeny were produced, determine the phenotypes and proportions of each progeny/phenotype combination of these progeny
b) Is the F1 individuals chromosome pair in cis or trans configuration? (not the recessive used for the test cross)
1. In the red faced spider monkey (Ateles paniscus), blue face (b) is recessive to red face (b), brown fur () is recessive to black fur (f), and short limbs (s) are recessive to long limbs (s). These loci are linked and the following map has been created: 6.7 mu 11.8 mu The coefficient of coincidence for these genes is 0.7. A monkey with blue face, brown fur, and homozygous for long limbs is crossed with a monkey homozygous for red face, black fur, and short limbs. An FI individual is then crossed with a monkey that is blue faced and has brown fur and short limbs (test cross). brown fur and short limbs (est cross). a,) If 600 progeny were produced, determine the phenotypes and proportions of each progeny/phenotype combination of these progeny. b.) Is the F1 individual's chromosome pair in a cis or a trans configuration? (not the recessive used for the test cross)Explanation / Answer
It would be 1:1:1:1:1:1:1:1 in both phenotype and genotype ratios.
Here the F1 is b+b f+f s+s that crossed with recessive bb ff ss
Now, we got 1. bb ff ss- blue face, brown fur, short limbs
2. bb ff s+s- blue face, brown fur, long limbs
3. bb f+f ss- blue face, black fur, short limbs
4. bb f+f s+s- blue face, black fur, long limbs
5. b+b ff ss- red face, brown fur, short limbs
6. b+b ff s+s- red face, brown fur, long limbs
7. b+b f+f ss- red face, back fur, short limbs
8. b+b f+f s+s- red face, black fur, long limbs
Each progeny either genotype or phenotype would be- 75
2. It is a trans configuration (F1)
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