Which of the following is in agreement with Darwin’s theory of evolution?(1 point) Responses
The organisms that are the most fit are always those with the greatest strengths.
Acquired characteristics are always inherited.
Mutations are never beneficial.
Survival is dependent on a species producing more offspring than can survive based on the resources.
9 answers
Survival is dependent on a species producing more offspring than can survive based on the resources.
The Bactrododema hecticum (African Stick Bug) is an herbivorous insect that looks like a stick. Based on modern evolutionary theory, the most likely explanation for the insect’s appearance is that(1 point) Responses
genes were transferred from the trees to the insects
a single gene mutation caused the resemblance
natural selections of many variations occurred to ensure survival
the insects changed because they ate the wood of the trees
genes were transferred from the trees to the insects
a single gene mutation caused the resemblance
natural selections of many variations occurred to ensure survival
the insects changed because they ate the wood of the trees
natural selections of many variations occurred to ensure survival
A genetically stable population of squirrel has occupied the deserts of Arizona for several years. The gene pool of this squirrel population will most likely continue to remain stable if(1 point) Responses
frequent migrations occur
random mating occurs
the population size is reduced
the number of mutations is increased
frequent migrations occur
random mating occurs
the population size is reduced
the number of mutations is increased
random mating occurs
Originally only one squirrel species inhabited the Ponderosa pine forest around the rim of the Grand Canyon, the Abert squirrels. About 10,000 years ago when Arizona’s Grand Canyonwas formed, the squirrels were separated into two species - the Abert squirrels, who inhabit the south rim; and the Kaibab squirrels, who inhabit the north rim. One population of squirrels had become two separate populations that could no longer reproduce. These squirrels are an excellent example of:
a. stabilizing selection
b. speciation
c. genetic equilibrium
d. selection on single-gene traits
a. stabilizing selection
b. speciation
c. genetic equilibrium
d. selection on single-gene traits
b. speciation
Which condition would most likely produce a change in the gene pool of a population?(1 point) Responses
no mutations in the population no mutations in the population
migrations out of the population migrations out of the population
a large population a large population
random mating in the population
no mutations in the population no mutations in the population
migrations out of the population migrations out of the population
a large population a large population
random mating in the population
migrations out of the population
1 answer