Cumulative Exam — Cumulative exam Answers

A population of pigs lives on an island together with burrowing termites. Pigs that have the longest snouts tend to survive more frequently than those with shorter snouts. Over time, most of the pig population is made up of individuals that have very long snouts. This is an example of which type of selection?

The great hornbill and the toucan both eat the same fruit, insects, and nuts. They both live in the rainforest. Their large bills function to get food and also as warning coloration. Which of the following is a limiting factor to the toucan population?

There are two different alleles for flower color, P and p. The image shows a white sweet pea with a genotypeo of pp.What can you surmise from the labeled image?

A population of squirrels lived together in a forest. An event occurred that caused the population to diverge into two different species over a long period of time. Which of the following is most likely the event that occurred?

Raccoons prefer woody areas and are omnivores, which means that they eat meat and plant materials. They are nocturnal, meaning that they are active at night. They are often eaten by mountain lions, gray wolves, and coyotes. Which of the following is a limiting factor for a raccoon population?

A population of elephants becomes too large, and several members leave the population. What is this process called?

A square kilometer of forest has 200 deer. What is the term that is used to describe this number?

Which human activity can produce disruption of fish breeding habits, increase in mosquito population, and flood control?

Mendel crossed two plants that were heterozygous for the trait of flower color. Which genotypes could he have used to represent the cross?

Predict what might happen to a population that is experiencing little immigration and emigration, low birth rate, and high death rate.

Why did Gregor Mendel choose to use purebred plants in his experiments?

A population contains short plants and tall plants. The short plants are not able to compete with tall plants for sunlight. The tall plants, however, are more susceptible to wind damage. Which type of selection will this population of plants most likely experience?

A dihybrid cross is created from plants that are heterozygous for both round seeds and yellow seed color. What is the ratio of offspring that have round seeds and yellow seed color?

Which has the most control of traits and inheritance?

Which statement best describes an understanding of genetics that would be missing without the work of Mendel?

A population of chimpanzees was separated when the forest that they lived in had a section cut down and a town was built. After a long period of time, the chimpanzees came back into contact but were incapable of breeding. Which of the following best describes the process that occurred?

Stick insects, also called walking sticks, are typically found in tropical and subtropical forests and grasslands. The insects are able to camouflage themselves by living among twigs in their environment.What is this an example of?

Which combination of alleles are always involved in the inheritance of a sex-linked trait?

Which type of limiting factor affects a large population more than it affects a small population?

Hemophilia is an X-linked recessive disorder (Xh) that is passed through generations and can be traced by using a pedigree. Based on the pedigree that is shown, which describes John?