Factors Affecting Genetic Variation Answers

The map shows the allele frequency of sickled hemoglobin (HbS) and malaria endemicity in Africa. Which statement best explains the relationship between HbS allele frequency and malaria endemicity in Africa?

In terms of natural selection, what is the best description of an organism that is fit?

A frog has more offspring than can survive on available resources.Of which is this an example?

Which statement describes natural selection?

Koalas are marsupials that are found in eastern Australia. Although their ancestors lived mostly on the ground, modern koalas spend most of their time in eucalyptus trees. This is possible because their hands and feet have strong claws and opposable digits.What other adaptation could have helped koalas as they evolved from land dwellers to tree dwellers?

Which was Charles Darwin’s contribution to the study of biology?

According to the concept of “survival of the fittest," if a population of birds eats worms that they find deep under ground by using their beaks, which members of the bird population would be more fit?

Which statement would least likely be used to describe variation?

Natural selection is a process by which organisms that are better adapted to their environment tend to

Consider this image of a gazelle.Which of the gazelle’s naturally selected traits is shown in this picture to be an evolutionary advantage?