Question

Suppose a tetrad analysis of dihybrids was performed in Neurospora crassa using a pair of genes. The four haploid products in each ascus were genotyped and recorded. Using the results shown in the table, calculate the frequency of recombinants (RF). Parents Parental ditypes (PD) 18% Tetratypes (T) 50% Nonparental ditypes (NPD) 32% a+ · b xa · 6+ RF: %

Answer 1

The frequency of recombinants in the tetrad analysis of dihybrids in Neurospora crassa is 32%.

Step-by-step explanation:

To calculate the frequency of recombinants (RF), we need to subtract the frequency of the parental ditypes (PD) and the tetratypes (T) from 100%. The equation for RF is: RF = 100% - (PD + T). In this case, the PD is 18% and the T is 50%, so the calculation will be: RF = 100% - (18% + 50%) = 100% - 68% = 32%. Therefore, the frequency of recombinants is 32%.