The geochemical cycle which involves mantle convection is the tectonic cycle. The tectonic cycle involves the movement of the Earth’s crust. It is through the mantle convection that the plate tectonics move. The movements inside the mantle influence how the plates move on the earth’s surface, which contributes to the formation of landforms.
Answer:
50% wild type and 50% black i.e. 1:1 phenotypic ratio
Explanation:
Given, b+ = wild type allele
b = recessive allele
b+b+ = dominant wild type
b+b = heterozygous wild type
bb = recessive black
First cross: female b+b (wild type) X male bb (black) = bb, bb, b+b, b+b
Since bb and b+b are in 1:1 phenotypic ratio, 52 black and 58 wild type progeny are produced.
From this progeny second cross occurs between:
female bb (black) X male (wild type) b+b = bb, bb, b+b, b+b
Again the same 1:1 phenotypic ratio is obtained. Half of the progeny will be be black (bb), other half will be wild type (b+b).
I’m pretty sure it dies down
The correct answers are A and the next one is B
