Question

Which of the following is the best example of evolution occurring?
Group of answer choices

Strains of bacteria can become immune to antibiotics that once effectively killed them.

Viruses can attack single-celled organisms, as well as multicellular organisms.

Lions and cows both have hair covering their bodies and give birth to live offspring.

Flag question: Question 6
Question 62 pts
Key deer, a subspecies of white-tailed deer, are only found on a few islands in the Florida Keys. They are tiny deer that weigh 45 to 65 pounds, which is very small compared to the 130– to 300–pound white-tailed deer that are found on the North American mainland. Which of the following conditions most likely resulted in the small size of the Key deer?
Group of answer choices

Limited food and water resources favored the survival of smaller deer.

Human influence caused increases in Key deer populations that improved genetic variation.

Overproduction of offspring on the mainland led to migration of small, less successful deer to the islands.

Flag question: Question 7
Question 72 pts
Although most gray squirrels have gray fur, sometimes individuals with white or black fur are born. If a white-furred individual were born in a population of gray squirrels living in a Florida forest, what would be the most likely long-term consequence of its presence for the squirrel population if the forest remained unchanged for the next several generations?
Group of answer choices

The number of white squirrels in the population would slowly increase as the original white squirrel produced white offspring.

The population would remain primarily gray, and the white squirrel would likely get eaten prior to adulthood.

The white squirrel would draw more predators to the area since it was more visible, and many gray squirrels would get eaten.

Flag question: Question 8
Question 82 pts
Which of the following occurs when the evolutionary effects of genetic drift is the greatest?
Group of answer choices

The population size is small

Sexual selection occurs

Intraspecific competition is weak

Flag question: Question 9
Question 92 pts
Which of the following is the best example of gene flow?
Group of answer choices

Wind blows pollen from one population of plants to another and cross-fertilization occurs.

Genes are shuffled by the crossing over of chromosomes during meiosis.

A small population of humans colonizes a newly formed island.

Flag question: Question 10
Question 105 pts
Match the terms to the correct answers
Group of answer choices
Structures that serve no purpose and seem to be left over from a previous ancestor.

[ Choose ]
Body structures that are similar in structure but different in function are said to be ___.

[ Choose ]
The preserved remains of ancient organisms.

[ Choose ]
The study of the distribution of plants and animals around the world.

[ Choose ]
several different species have similar embryological structures in common

[ Choose ]

Answer 1

Here are the best answers:

Question 5: Strains of bacteria can become immune to antibiotics that once effectively killed them.

Question 6: Limited food and water resources favored the survival of smaller deer.

Question 7: The population would remain primarily gray, and the white squirrel would likely get eaten prior to adulthood.

Question 8: The population size is small.

Question 9: Wind blows pollen from one population of plants to another and cross-fertilization occurs.

Question 10 matches:
- Structures that serve no purpose and seem to be left over from a previous ancestor. → Vestigial structures
- Body structures that are similar in structure but different in function are said to be → Homologous
- The preserved remains of ancient organisms. → Fossils
- The study of the distribution of plants and animals around the world. → Biogeography
- several different species have similar embryological structures in common → Comparative embryology