Tomato plants can have hair stems and leaves one of the gene

Tomato plants can have hair stems and leaves, one of the genes that regulates these is called hairless (hl). Plants with hairy stems have a dominant allele HL, and hairless plants have the recessive allele hl. The dwarf gene is found on chromosome 2 and hairless is found on chromosome 11.. A pure-breeding tall, hairless plant is crossed to a pure-breeding dwarf, hairy plant The F1s are then crossed and the F2 evaluated. Fill in the following information. Filling the following in F1 Phenotype(s) ____________ F1 Genotype(s) ____________ Draw a tomato cell from the F1s undergoing meiosis I and II. Include chromosomes 2 and 11 and highlight/mark the dwarf and hairless genes What are the possible gametes from the F1 plants? F2 Phenotype(s) _____________ F2 Genotype(s) _____________ Write out a Punnett square for the F1 cross If you got 480 plants how many would be Tall, hairy? Tall, hairless? Dwarf, hairy? Dwarf, hairless? What would be the difference if you did the same crosses with pure-breeding tall, hairy to dwarf, hairless? If you are given a tall, hairy plant and a dwarf, hairless plant to cross, and that cross yields 120 tall, hairy; 112 tall, hairless; 119 dwarf, hairy; 131 dwarf, hairless. What is the genotype of the parents? Why? Show gametes and punnett square if that helps.

Solution

F1 phenotype: Tall hairy plant.

F1 genotype: TtHLhl.

Possible gametes for F1 are;

THL, Thl, tHL , thl.