In tomato, tall stem (A) is dominant over short (a) and round fruit (B) over pear-shaped (b); the genes are on one chromosome, 10 map units apart. An AB/ab plant was crossed with an ab/ab plant, giving 400 plants. 1) Explain linked inheritance. 2) Write the cross and show crossover and non-crossover gametes. 3) Calculate the percentages of gametes of the AB/ab plant. 4) Calculate the number of plants in each phenotypic class. 5) Find the share (%) of recombinant plants. For each part, write out the law or method used (cross scheme, formulas, reasoning) and all calculations step by step.
The AI score is an estimate. In the official exam the written part is marked by BMBA examiners.