A mutated CFTR gene codes for an abnormal CFTR protein. This protein alters the normal function of the cell, leading to the disorder cystic fibrosis. Based on the statements, which of the following is true?

Cystic fibrosis is caused by a mutated CFTR gene.

The CFTR gene always causes cystic fibrosis.

Cystic fibrosis causes mutations to the CFTR gene.

Cystic fibrosis is an autosomal dominant disorder.

Read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. applying the biological species concept, the sterility of ligers reveals that a. lions are probably a subspecies of tigers b. tigers and lions are the same species c. a new species called "ligers" is forming d. tigers and lions are separate species

Individuals do not compete directly for resources, but are prey for the same predator

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight. which of these is most likely effect on the ecosystem?