Answer:
Sharp-spined cactus
Explanation:
Given, that N allele is required for the production of spine and S allele will produce sharp sines.
True breeding sharp spined cactus: NNSS
spineless cactus: nn__ ( we can't fix the allele for second gene since it has not been mentioned as true breeding )
Their progeny: NNSS X nn__ = NnS_
So the progeny is going to be sharp spined because both the dominant alleles N and S are present.
C Chromosomes break at centromeres,and sister chromatids move to opposite ends of the cell.
1.) The genetic information will be identical as this is asexual reproduction.
2.)They can spread more efficiently in the sense that the Wind can carry them for miles
Hope I helped
Algae will be overgrown and larger fish will begin to die out as the carrying capacity has lowered due to a limit in food.