Answer:
A. Redshift and Blueshift
Explanation:
It’s red shift and blue shift, because this only occurs when the frequency of the wave is made longer or shorter due to the movement of the source relative to the observer.
The offspring that will be produced in the cross would have tortoiseshell fur.
<h3>X-linked traits</h3>
In cats, the male is XY while the female is XX.
Assuming that black fur is caused by the allele B and the orange fur is caused by A
A black female will have the genotype 
An orange male will have the genotype 
Crossing the two:
x 
Offspring:
,
,
, and 
= tortoiseshell fur female
= tortoiseshell fur male
More on x-linked traits can be found here: brainly.com/question/11189684
Answer:
It is an ongoing process because species and communities continue to evolve over time.
Explanation: