Question

The test cross of a $F_1$ individual with genotype (++ / ab) produced the following offsprings ++/ab 10, ab/ab 10, +a.ab 40 +b/ab 40. Based on this data, predict the configuration of $F_1$ heterozygous.

• A. trans-configuration
• B. cis-configuration
• C. both (a) and (b)
• D. None of these

Answer 1

The correct option is A trans-configuration

Cis configuration is when the different genes or alleles of both dominant or recessive characters are present on the same homologous chromosome while trans configuration is when one pair of dominant and one pair of recessive allele is on the same chromosome .

So correct answer is ' B ' .