contestada

In tomatoes, red fruit color is dominant, R, to yellow fruit color, r. A farmer has tomatoes that produce either red or yellow tomatoes. He has signed a contract with a large seed company to provide pure, RR, and pure yellow seeds, rr. They do not want any hybrids. How could the farmer tell if his tomatoes are pure or hybrid?

Respuesta :

22carlsonjasmine

Answer:

He should perform a "testcross" by crossing the tomatoes in question with yellow-fruited plants.

If they are pure, all offpsring will be Red:  RR x rr = all Rr

If they are hybrids (heterozygous), half the offspring will have yellow fruits:  Rr x rr = 1:1 (red to yellow)

Explanation:

Otras preguntas