Question

Cane toads are large, nonnative, poisonous toads in Australia. After cane
toads entered Australia, scientists observed that the average head size in a
population of toad-eating snakes was getting smaller. Snakes with smaller
heads are not able to eat the large cane toads. What type of situation is this?
O A. Disruptive selection
B. Species richness
C. Directional selection
D. Genetic variation

Answer 1

The answer you are looking for is C

Answer 2

Natural selection is a process by which the organisms adjust to the variation in the environmental conditions so they can endure and thrive in the altered conditions.

The correct answer is:

Option C. Directional selection

This can be explained as:

• Directional selection is a negative form of natural selection in which the inhabitants of one species is favoured over another.

• The species with better trait characteristics will be favoured over the organism with less preferred attributes.

• The allele recurrence in directional assortment shifts over time.

Therefore, toads with better traits (head size) are favoured over snakes with smaller mouth sizes.

To learn more about the directional selection follow the link:

https://brainly.com/question/23396539