NYS Regents


11 If mitotic cell division is the only way a particular species of single-celled organism can reproduce, it is most likely that

(1) mutations can not occur in this species
(2) the rate of evolution in this species is slower than in one
that reproduces sexually
(3) the number of organisms of this species in an area will remain constant
(4) this species belongs to the animal kingdom

12 In order for new species to develop, there must be a change in the

(1) temperature of the environment
(2) migration patterns within a population
(3) genetic makeup of a population
(4) rate of succession in the environment

13 Which statement is not part of the concept of natural selection?

(1) Individuals that possess the most favorable variations will have the best chance of reproducing.
(2) Variation occurs among individuals in a population.
(3) More individuals are produced than will survive.
(4) Genes of an individual adapt to a changing environment.

14 The diagram below shows the evolution of some different species
of flowers.

Which statement about the species is correct?

(1) Species A, B, C, and D came from different ancestors.
(2) Species C evolved from species B.
(3) Species A, B, and C can interbreed successfully.
(4) Species A became extinct.

15 In sexually reproducing species, the number of chromosomes in
each body cell remains the same from one generation to the next
as a direct result of

(1) meiosis and fertilization
(2) mitosis and mutation
(3) differentiation and aging
(4) homeostasis and dynamic equilibrium

Previous Page Next Page