A piece of alien DNA cannot multiply itself in the progeny cells of the organism because: a. It has no the sequence called Origin of replication (ori) needed for starting replication.

b. A piece of DNA will be denatured and damaged soon as it has no stability.

c. A piece of DNA is easily unwound and the H bonds between nitrogen bases are broken.

d. Both A & B.​

In familial hypercholesterolemia individuals homozygous for the allele causing the disorder completely lack receptors on liver cells that take up cholesterol from the blood stream. heterozygous have one-half the number of receptors while individuals homozygous for the normal allele are phenotypically normal. this is an example of a.epistasis b.complete dominance c. incomplete dominance d. codominance

Ascientist and her team counted 200 individual deer in an area of 10 square kilometers. what is the population density?

How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.