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Q.

What will be the number of chromosome and amount of DNA in sporophyte of moss in prophase if the spores contain 40 chromosomes and 80pg of DNA?

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a

80 number of chromosomes and 160 pg of DNA

b

160 number of chromosomes and 320 pg of DNA

c

80 number of chromosomes and 320 pg of DNA

d

40 number of chromosomes and 160 pg of DNA

answer is C.

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Detailed Solution

The spores of mosses are haploid. It contains n chromosomes and c amount of DNA.
n= 40
c= 80 pg
The sporophyte of moss is diploid having 2n number of chromosomes and 2c amount of DNA.
The sporophyte of moss in prophase would contain 2n number of chromosomes and 4c amount of DNA.
2n= 40x2=80
4c= 4x80=320pg

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