A geneticist is mapping the chromosomes of the newly captured gremlin. Stripe is heterozygous for linked genes with alleles Bb, Ee, and Hh that determine if gremlins have biting teeth (B), are evil (E), have hair (H). In order to determine if the three genes are linked, a standard testcross was done, and 1000 offspring had the following genotypes: $$\begin{array} { l l }
48 & \text { bb ee } \mathrm { Hh } \
36 & \text { Bb ee hh } \
400 & \text { Bb ee } \mathrm { Hh } \
4 & \text { Bb Ee Hh } \
426 & \text { bb Ee hh } \
46 & \text { Bb Ee hh } \
38 & \text { bb Ee Hh } \
2 & \text { bb ee hh }
\end{array}$$ What is the recombination frequency between genes E and B?
A) 9.0%
B) 8.4%
C) 42.6%
D) 10.0%
E) 9.4%

Question

A geneticist is mapping the chromosomes of the newly captured gremlin. Stripe is heterozygous for linked genes with alleles Bb, Ee, and Hh that determine if gremlins have biting teeth (B), are evil (E), have hair (H). In order to determine if the three genes are linked, a standard testcross was done, and 1000 offspring had the following genotypes: $$\begin{array} { l l } 
48 & \text { bb ee } \mathrm { Hh } \
36 & \text { Bb ee hh } \
400 & \text { Bb ee } \mathrm { Hh } \
4 & \text { Bb Ee Hh } \
426 & \text { bb Ee hh } \
46 & \text { Bb Ee hh } \
38 & \text { bb Ee Hh } \
2 & \text { bb ee hh }
\end{array}$$ What is the recombination frequency between genes E and B?
A) 9.0%
B) 8.4%
C) 42.6%
D) 10.0%
E) 9.4%

Quizplus · Accepted Answer

The Answer is D

A Geneticist Is Mapping the Chromosomes of the Newly Captured