Question

Each member of a class sampled a piece of PTC testing paper. Thirty people sampled the chemical.

Twenty persons were tasters. How many had homozygous genes?



10-30

10

10-20

0-10

Answer 1

what do u think?

Answer 2

can you teach me how to work this out

Answer 3

i actually want to learn how to do this

Answer 4

@pooja195

Answer 5

plz teach me

Answer 6

lol

Answer 7

hmm i cant really teach it well maybe @Directrix can?

Answer 8

well if i was to make an educated guess ill say the 2nd one :/

Answer 9

ok well the 10 people who are not PTC tasters are homozygous (homozygous recessive, tt). So you have 10 there .

Answer 10

that is incorrect @pooja195

Answer 11

i told u i wasnt good at explainig this and that was just my thought you werent supposed to answer with that :) sorry for the inconvenience

Answer 12

oh lol

Answer 13

yea