Question

Which of the following is not true of Mendel's pea plant experiments?

a. P generation flowers were heterozygous

b. F1 generation flowers were all heterozygotes

c. F2 generation flowers were both homo- and heterozygous

d. F2 generation flowers exhibited predictable phenotypes

Answer 1

answer -

the option no a is the answer

this is because the parent generation was a pure line and the character genotype was homozygous and the P generation flowers were not heterozygous.

Only option A is not true, remaining other options are false

see the justifications  below

parent - PP(purple) X pp(white)

gametes - P, P p,p

F1 generation -

gametes	P	P
p	Pp	Pp
p	Pp	Pp

hence at the F1, all the progeny are heterozygous

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F2 generation - self cross Pp x Pp

gametes - P, p P ,p

gametes	P	p
P	PP	Pp
p	Pp	pp

hence F2 generation flowers were both homo- and heterozygous