The evolutionary process whereby an ancestral species undergoes speciation and produces two descendant species,
both distinct from their common ancestor, is known as ____.
a. gradualism
b. equilibrium
c. taxonomy
d. anagenesis
e. cladogenesis
ANSWER: e
You might also like to view...
The gradient distributions of alleles across continents reflect _____
a. the delineation of new races b. genetic drift c. human migration patterns d. protective alleles e. natural selection
Many archaeal genomes include chromosomes and plasmids.
Answer the following statement true (T) or false (F)
A population of 1,000 birds exists on a small Pacific island. Some of the birds are yellow, a characteristic determined by a recessive allele. The others are green, a characteristic determined by a dominant allele. A hurricane on the island kills most of
the birds from this population. Only 10 remain, and those birds all have yellow feathers. Which of the following statements is true? A) Assuming that no new birds come to the island and no mutations occur, future generations of this population will contain both green and yellow birds. B) The hurricane has caused a population bottleneck and a loss of genetic diversity. C) This situation illustrates the effect of a mutation event. D) The 10 remaining birds will mate only with each other, and this will contribute to gene flow in the population.
Diploid cell formed by the union of two gametes; the product of fertilization.
What will be an ideal response?