Answer:
<h2>50%</h2>
Explanation:
As given;
A true breeding plant with purple flower: PP
A true breeding plant with white flower: pp
Cross between these parents = PP× pp
Offspring are =Pp, Pp, Pp, Pp( all are heterozygous purple)
Now cross between this plant and recessive white flower (pp)
Pp × pp
Offspring are: Pp, Pp, pp, pp
50% are white and 50 % are purple.
The answer is number 3 I'm sure
Answer:
The oxygen and carbon dioxide in the lower layers of the troposphere (that touches Earth) allow life to exist as organisms can respire and plants can photosynthesise. The atmosphere also helps to keep the Earth warm by trapping solar energy.
Explanation:
