Which of the following is least likely to change the gene pool of a population of chipmunks? O A pesticide poisons and kills a large number of chipmunks.
O A group of chipmunks moves to a new habitat.
O A number of chipmunks die due to old age.
O A genetic mutation causes some of the chipmunks to have larger eyes.

Fan egg cell containing the (n+1) number of chromosomes combines with a sperm cell containing the (n) number of chromosomes, what is the result of this union? a) all future somatic cells of the organism will contain the (2n + 1) number of chromosomes. b) all future somatic cells of the organism will contain the (2n - 1) number of chromosomes. c) only certain somatic cells of the organism will contain the (2n + 1) number of chromosomes. d) all future somatic cells of the organism will contain the normal diploid number of chromosomes.

Explain why phospholipid molecules form a bilayer. (3 marks)

The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer