Question

[BIOLOGY: CLASS10] please answer the questions related to Mendel's cross, punnett square, genotype, phenotype,... please refer to the attachment...

Answer 1

Explanation:

IIa. phenotypic ratio is. 3 brown eyed : 1 blue eyed

genotypic ratio is 1BB : 2Br : 1rr

IIb. 1. BB × Br

phenotypic ratio is 4 brown eyed

genotypic ratio is 2BB : 2Br

2. Br × rr

phenotypic ratio is 2brown eyed : 2 blue eyed

genotypic ratio is 2Br : 2rr

Answer 2

$\large\tt\underline{\red{Answer :-}}$

When a denser medium is kept between two parallel faces inside a rare medium and a ray falls upon one of the two parallel faces reflects into the denser medium and comes out of another surface becoming parallel to the incident ray.

In the successive reflection the deviation at first surface is reversed at second surface but the emergent ray deviates literally.

The distance to what an emergent Ray devited from the direction of incident ray when suffers refraction at two parallel surfaces is called as lateral deviation/ displacement.

The lateral displacement/deviation increase with the increase in

• thickness

• angle of incident

• optical density