Populations evolve and individual organisms do not. Evolution occurs through natural selection and survival of the fittest as populations evolve traits that better suit their environment.
Answer:
PP = 25%
Pp = 50%
pp = 25%
Explanation:
Using punnett square, we can predict the percentage probability of genotypes.
P p
P PP Pp
p Pp pp
In this cross we have,
PP = 1/4 = 25%
Pp = 2/4 = 50%
pp = 1/4 = 25%
We have ratio,
1 : 2 : 1
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Hope this helped!
Karyotype examination needs to be done at metaphase.
In karyotype test, the examiner is trying to find whether the chromosome is having any abnormality. In metaphase, the chromosome is easier to count and observed.
A chemical (<span>colchicine) will be given to make the cells stuck at metaphase. </span>