QUESTION 11 Microevolution is the result of changes in the: Gene flow Gene pool

Question

QUESTION 11

Microevolution is the result of changes in the:

Gene flow

Gene pool

Geneology

Genetic drift

5 points   

QUESTION 12

Which of the following is an example of a characteristic under sexual selection?

Antlers on an elk

Antibiotic resistance in bacteria

Fur color in dogs

All of these are

5 points   

QUESTION 13

New lineages sometimes form when populations are isolated by physical (geographic) barriers. This process is known as _____________.

sexual selection

gene flow

sympatric speciation

allopatric speciation

5 points   

QUESTION 14

Which of the ideas below is a traditional belief that is NOT part of the modern theory of evolution?

Populations and higher-level groups of organisms change over generations of time.

Humans are related to, and share many characteristics with, other forms of life.

Each life form is part of a chain of being from the lowest organisms such as bacteria (least perfect) to humans (the most nearly perfect of all species).

Species can be organized into natural groups based on their shared inherited characteristics.

5 points   

QUESTION 15

Which statement is true about Charles Darwin?

He was the first to propose a hypothesis for the origin of life

He was the first to publish the traditional belief of evolution.

He was the first to outline the modern theory of evolution

He was the first to ask questions about the origins of life

5 points   

QUESTION 16

A flowering shrub is introduced to North America as an ornamental plant. Beetles that normally feed on a different North American plant species begin to live and feed on the introduced shrub. Their appearance and seasonal schedule begin to shift as they adapt to feeding on the new plant host. Gradually the beetles on the introduced shrub form a distinct species that does not breed with the original source population of beetles. This is an example of ___________.

sympatric speciation

allopatric speciation

genetic drift

None of the above

5 points   

QUESTION 17

Worldwide, most adult humans cannot digest lactose (milk sugar) and become sick if they drink milk. When people in Europe and parts of Africa domesticated livestock and began to use milk as a source of food, individuals who could better tolerate lactose were better able to grow, survive, and produce offspring. As a result, alleles for adult lactose tolerance became common in these milk-drinking populations. This is a good example of…

sexual selection

natural selection

genetic drift

artificial selection

5 points   

QUESTION 18

Old world monkeys have prominent tails; apes and humans do not. At what labeled point did this evolutionary event (loss of the tail) occur?

Point 1

Point 2

Point 3

5 points   

QUESTION 19

Why does antibiotic resistance become more common among bacteria when they are exposed to antibiotics?

The antibiotics cause mutations to occur in individual bacteria. These mutations make the bacteria resistant to the drugs.

Individual bacteria become immune or accustomed to the antibiotics as they are exposed to the drugs. The longer a cell is exposed, the more resistant it becomes.

Bacteria vary in how well they tolerate antibiotics. If a bacterial population is exposed to antibiotics, resistant individuals reproduce better and their frequency increases over time.

5 points   

QUESTION 20

Natural selection results in...

Environmental stresses on a population

Mutations in the genetics make-up of a population

None of the above

A.

Gene flow

B.

Gene pool

C.

Geneology

D.

Genetic drift

New world Old world Lemurs Lorises arsiers monkeys monkeys Cladogram of Primates Apes Humans

Explanation / Answer

11. Microevolution is the result of changes in the: D) Genetic Drift. Genetic drift is the variation among allele freqencies and it occurs becaue of a common chance and leads to microeolution.

12.Which of the following is an example of a characteristic under sexual selection- A) Antlers on an elk- is an example of sexual selection to atract mates.

13. New lineages sometimes form when populations are isolated by physical (geographic) barriers. This process is known as D) allopatric speciation.

14. Which of the ideas below is a traditional belief that is NOT part of the modern theory of evolution- C) Each life form is part of a chain of being from the lowest organisms such as bacteria (least perfect) to humans (the most nearly perfect of all species).

15. Which statement is true about Charles Darwin- C) He was the first to outline the modern theory of evolution.

16. A flowering shrub is introduced to North America as an ornamental plant. Beetles that normally feed on a different North American plant species begin to live and feed on the introduced shrub. Their appearance and seasonal schedule begin to shift as they adapt to feeding on the new plant host. Gradually the beetles on the introduced shrub form a distinct species that does not breed with the original source population of beetles. This is an example of A) Sympatric speciation--New species evolve from ancestral species while habitating is the same geographical area.

17. Worldwide, most adult humans cannot digest lactose (milk sugar) and become sick if they drink milk. When people in Europe and parts of Africa domesticated livestock and began to use milk as a source of food, individuals who could better tolerate lactose were better able to grow, survive, and produce offspring. As a result, alleles for adult lactose tolerance became common in these milk-drinking populations. This is a good example of -B) Natural seletion.

18. Old world monkeys have prominent tails; apes and humans do not. At what labeled point did this evolutionary event (loss of the tail) occur---C) Point 3- At this point the transitioal changes occured (loss of tail) and was inherited by apes and then humans.

19- Why does antibiotic resistance become more common among bacteria when they are exposed to antibiotics-A) The antibiotics cause mutations to occur in individual bacteria. These mutations make the bacteria resistant to the drugs.-By the process of horizontal gene trasfer bacteria transforms resistance genes.

20.

11. Microevolution is the result of changes in the: D) Genetic Drift. Genetic drift is the variation among allele freqencies and it occurs becaue of a common chance and leads to microeolution.

12.Which of the following is an example of a characteristic under sexual selection- A) Antlers on an elk- is an example of sexual selection to atract mates.

13. New lineages sometimes form when populations are isolated by physical (geographic) barriers. This process is known as D) allopatric speciation.

14. Which of the ideas below is a traditional belief that is NOT part of the modern theory of evolution- C) Each life form is part of a chain of being from the lowest organisms such as bacteria (least perfect) to humans (the most nearly perfect of all species).

15. Which statement is true about Charles Darwin- C) He was the first to outline the modern theory of evolution.

16. A flowering shrub is introduced to North America as an ornamental plant. Beetles that normally feed on a different North American plant species begin to live and feed on the introduced shrub. Their appearance and seasonal schedule begin to shift as they adapt to feeding on the new plant host. Gradually the beetles on the introduced shrub form a distinct species that does not breed with the original source population of beetles. This is an example of A) Sympatric speciation--New species evolve from ancestral species while habitating is the same geographical area.

17. Worldwide, most adult humans cannot digest lactose (milk sugar) and become sick if they drink milk. When people in Europe and parts of Africa domesticated livestock and began to use milk as a source of food, individuals who could better tolerate lactose were better able to grow, survive, and produce offspring. As a result, alleles for adult lactose tolerance became common in these milk-drinking populations. This is a good example of -B) Natural seletion.

18. Old world monkeys have prominent tails; apes and humans do not. At what labeled point did this evolutionary event (loss of the tail) occur---C) Point 3- At this point the transitioal changes occured (loss of tail) and was inherited by apes and then humans.

19- Why does antibiotic resistance become more common among bacteria when they are exposed to antibiotics-A) The antibiotics cause mutations to occur in individual bacteria. These mutations make the bacteria resistant to the drugs.-By the process of horizontal gene trasfer bacteria transforms resistance genes.

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.