Stuck on a maths question, help
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Stuck on a maths question, help

[From: ] [author: ] [Date: 12-10-17] [Hit: ]
This question is really bugging me if anyone can explain and answer it would mean a lot,(then check the numbers add to the sample size,......
In genetics Mendel's Law of indipendant assortment can be used to estimate number found in a population. For example peas can either be yellow or green in colour and smooth or wrinkled in appearance.

Yellow and smooth are dominant genes so the ratio is 9:3:3:1 for (Round pea: Wrinkled pea: Round pea: Wrinkled pea)

A random sample of 10(to the power 4) peas is taken.

How many of each type of pea would you expect to find? And how many round peas would you expect to find?

This question is really bugging me if anyone can explain and answer it would mean a lot, thanks

-
10^4 =100000
9:3:3:1

First add the ratio together
9+3+3+1=16

Then divide the sample size by this number
100000/16= 6250

Now multiply this number by each part of the ratio
9*6250:3*6250:3*6250:1*6250

56250:18750:18750:6250

(then check the numbers add to the sample size, 56250+18750+18750+6250=100000)
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