Answer:
<h2>a) Evolution</h2><h2>
b) harmful recessive traits become uncommon</h2>
Explanation:
<h2>
Experiments on mice should be stopped. I had a pet as a white mouse. He died because of depression 2 months ago. I am sad about seeing this mouse being treated cruelly in the lab.</h2>
Answer:
Hydrogen sulfide or methane
They use methane as an energy source
Answer:
Mule is produced from a hybrid cross.
Explanation:
A mule is the offspring which is produced by crossing or mating of male donkey with female horse.
Where the male donkey is called Jack and female horse is called mare.
The offspring produced as a result is Mule.
The gender of Mules may be male or female but consists of 63 chromosomes.
But such produced Mules are sterile.
