Explanation:
When there is alteration in the DNA sequence in the chromosomes of an organisms which affects the protein expression and therefore the organism involved,the genetic condition is called mutation. its effects can be positive or negative,But,negative effects is most common.
It can be germline in which the genes is affected,or somatic in which the protein expression of the body cell is affected.
Answer:
The fact that the mice with genetic mutation shows similar patterns of inheritance show that some genes in the mice might be playing a dominant role in diseases resistance in this animals.This is evident since the patterns were peculiar to mice with mutated ears,and not observed in normal ears.
Therefore the experiment should be carried out again to confirm the influence of these genes on the resistance
Answer:
The warming of Earth, accompanied by the seas covering the land, created the proper conditions for multicellular organisms to form.
Explanation:
Answer:
true
Explanation:
<em><u>Some water pollution is caused from “point sources” that is discrete locations, from which pollutants are discharged, e.g., a pipe, ditch, ship, or factory smokestack. Point sources originate in large and easy to trace facilities, hence are easier to control. In contrast, pollution from “nonpoint” sources is cumulative, arising from multiple inputs over larger areas, such as farms, city streets, and residential neighbourhoods. Hence, such sources are harder to precisely identify, and because of this uncertainty, nonpoint source pollution is harder to control than the point source.</u></em>
