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What genetic factor is most likely to result in the extinction of an entire species?(1 point)
Responses

a lack of genetic variety in the population
a lack of genetic variety in the population

a genetic defect in a few members of the population
a genetic defect in a few members of the population

a genetic resistance against many diseases
a genetic resistance against many diseases

a lot of genetic variety in a population

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9 answers

THE CORRECT ANSWER IS: a lack of genetic variety in the population
Coyotes primarily feed on small mammals, such as rabbits, squirrels, birds, and mice. Many of these prey try to escape from coyotes by burrowing into the ground. Which of the following characteristics is most likely to be naturally selected to increase a coyote population's chances for survival over time?(1 point)
Responses

sharper claws that aid in digging
sharper claws that aid in digging

blunt teeth that can be used for grinding
blunt teeth that can be used for grinding

lighter colored fur that reflects light
lighter colored fur that reflects light

smaller ears that are less sensitive to noise
THE CORRECT ANSWER IS: sharper claws that aid in digging
Over time, the climate of a region becomes cooler. How will this most likely affect the species living in that region?(1 point)
Responses

Some species that already have or that develop cold-weather adaptations through natural selection will survive, while species without cold-weather adaptations may go extinct.
Some species that already have or that develop cold-weather adaptations through natural selection will survive, while species without cold-weather adaptations may go extinct.

All of the current species living in the region will migrate to warmer areas, while species adapted to cold-weather climates will migrate into the region.
All of the current species living in the region will migrate to warmer areas, while species adapted to cold-weather climates will migrate into the region.

All of the current species living in the area will become extinct, and new species better adapted to the climate will form and populate the region.
All of the current species living in the area will become extinct, and new species better adapted to the climate will form and populate the region.

Most of the current species living in the area will develop beneficial mutations, which will lead to adaptations that help them survive in the new climate.
THE CORRECT ANSWER IS: Some species that already have or that develop cold-weather adaptations through natural selection will survive, while species without cold-weather adaptations may go extinct.
Small differences between parents and offspring accumulate over time. This process(1 point)
Responses

prevents parents from being able to care for their offspring.
prevents parents from being able to care for their offspring.

makes it impossible for species to adapt to changes in their environment.
makes it impossible for species to adapt to changes in their environment.

results in only one type of organism that has the exact same characteristics as its ancestors.
results in only one type of organism that has the exact same characteristics as its ancestors.

results in many different types of organisms with different characteristics from their ancestors.
THE CORRECT ANSWER IS: results in many different types of organisms with different characteristics from their ancestors.
Question
Many sponges can reproduce asexually. Ladybugs, on the other hand, reproduce sexually. When small bits of a sponge are broken off—often by currents or by predators—they can float to new regions and regenerate as new sponges. A ladybug must find a mate before it can reproduce.One disadvantage of the sponge's method of reproduction is that(1 point)
Responses

it requires more energy.
it requires more energy.

its offspring have little genetic diversity.
its offspring have little genetic diversity.

its offspring have greater genetic diversity.
its offspring have greater genetic diversity.

it must devote a greater portion of its life cycle to reproduction.
The disadvantage of the sponge's method of reproduction is: its offspring have little genetic diversity.