PCR was used to amplify segments of DNA from two different genes (A and B) using
ID: 173668 • Letter: P
Question
PCR was used to amplify segments of DNA from two different genes (A and B) using genomic DNA from two different individuals (P1 and P2) as templates. Four bands were produced from each individual, indicating that they were heterozygous for long and short alleles of each gene. Then, nine progeny from a cross of these two individuals were genotyped in the same way. The gel diagram below shows the banding patterns observed among the progeny of that cross. The bands are numbered 1 -4. A. Identify which pair of bands represents the two alleles of gene A. and which pair of bands represents the two alleles of gene B. B. Assuming that the two pairs of alleles undergo independent assortment, what is the probability that an offspring of the cross shows the banding pattern in lane D?Explanation / Answer
A. The two alleles of gene A are represented by bands 2 and 3, while the two alleles of gene B are represented by bands 1 and 4.
B. The probability of the offspring showing the band pattern in D would be 25% (Aa--) when the parents are crossed.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.