Keystone Anchor 8

The table below shows the genotypes that result in four different blood types in humans.

Based on the information in the table, which of the following describes this pattern of inheritance?

Hemophilia is an X-linked recessive condition in which blood does not clot properly. Queen Victoria of England had one allele for hemophilia. Which of the following statements describes the most likely pattern for the occurrence of hemophilia in Queen Victoria’s descendants?

Human HLA genes have as many as 100 different alleles per gene. The alleles code for proteins that are involved in accepting or rejecting an organ following an organ transplant. Which statement correctly explains why this multiple allele inheritance pattern makes it difficult to match an organ donor with an organ recipient?

Larry is treated for type 1 met-H with vitamin C, and his skin no longer looks blue. How does this affect the likelihood of Larry passing on the allele for type 1 met-H to his offspring?

A fight between a family of lions and a family of hyenas over an animal carcass is best described as competition between which of the following?

Which of the following shows the organizational level of a biome from the biggest category to the smallest category?

Succulent plants, such as cacti, are most often found in which terrestrial biome?

Which factor has the greatest influence on the type of ecosystem that will form in a particular geographic area?

An organism makes glucose using energy from the sun. Which of the following best describes that organism?

A food chain is shown below.

Grass → Rabbit → Weasel → Fox → Fungi

Which population would most likely increase if the weasel was removed from the food chain?

Which of the following best describes how plants transfer carbon in the carbon cycle?

Agricultural runoff can carry fertilizers into lakes and streams. This runoff can cause algae populations to greatly increase. What effect does this change in the algae population most likely have on lakes and streams?

Populations of typical prey animals, such as deer, might exceed the carrying capacity of an ecosystem if top predators, such as mountain lions, are removed. 

Without the mountain lions, increased numbers of deer may reduce the food supply available to other herbivores, such as field mice and crickets. As a result, populations of deer, mice, and crickets might decline, causing a population decrease in species that feed on these organisms as well.

This example implies that properly functioning predator/prey relationships do which of the following?

How confident do you feel about this topic for the Keystones?