Applying. If a heterozygous tall plant (Tr) is crossed with a homozygous short plant (tt), what percentage of the offspring will be heterozygous tall? a. 25% b. 50% c. 75% d. 100%
Answer (1)
In this scenario, the trait forplant height is determined by asingle gene with two possiblealleles - T for tall and t for short.The heterozygous tall plant (Trn)carries one allele for tallness andone allele for shortness. Whencrossed with a homozygousshort plant (tt) that carriestwo alleles for shortness, thepossible outcomes for theoffspring are as follows:- 50% of the offspring will inheritone T allele and one t allele,making them heterozygous tall(Tr).- 50% of the offspring will inherittwo t alleles, making themhomozygous short (tt).Therefore, 50% of the offspringfrom this cross will beheterozygous tall.
