Map distance (Genetics) Help 10 pts? and Aloe menyharthii - emerging inflorescence

Map distance (Genetics) Help 10 pts?

In tomato plants, a gene controlling fruit shape has 2 alleles: O (round) and o (oval). A gene controlling inflorescence (position of the flowers) has two alleles: S (simple) and s (compound). The map distance between the two genes is 22 cM. A pure-breeding plant with oval fruit and compound inflorescence is crossed with a pure-breeding plant with round fruit and simple inflorescence. The F1 have round fruit and simple inflorescence. The F1 are then crossed to plants with oval fruit and compound inflorescence and 100 offspring are produced. How many of the offspring would you expect to have oval fruit and simple inflorescence?
a) 11

b) 22

c) 25

d) 39


inflorescence best answer:

Answer by Peter S
a) 11% ( and 11% round/compound) giving 22% total recombinants = 22cM.

inflorescence

Aloe menyharthii - emerging inflorescence


This plant is from close to Namina - Nampula province in northern Mozambique.

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