REVISION UPS 2 CHAPTER 3-6 SB025

The best word to describe about natural selection that helps an organism survive in its environment is 

• Camouflage

• Adaptation

• Mutation

• Evolution

In directional selection, the curve of the population after selection will

• Shift to the selection pressure

• Shift to the favored phenotype

• Shift to the unfavored phenotype

• Shift to the left and right

Choose the CORRECT explanation

• Stabilizing selection promotes genetic variability as both extreme phenotypes are eliminated

• Disruptive selection promotes genetic variability as both extreme phenotypes are favored

• Stabilizing and disruptive selection will reduce genetic variability

• Directional selection reduce genetic variability as both extreme phenotypes are eliminated

Artificial selection is also known as

• Genetic manipulation

• Selective hearing

• Selective breeding

• Random selection

What is means by "survival of the fittest"?

• Being the strongest

• Being the smartest

• Being able to survive and produce offspring

• Being able to collect as much resources as possible

A flash flood carried a raft of Amazon ants away from their original population. There is enough distance between the two groups, that they will never meet in nature again. What type of reproductive barrier is this?

• behavioral isolation
• temporal isolation 
• gametic isolation
• geographic isolation 

The genitalia of the male damselfly varies in shape. Certain males can only hold onto & mate with females whose genitalia fit.  What type of reproductive barrier is this?

• behavioral isolation
• temporal isolation 
• gametic isolation
• mechanical isolation 

Some female peacocks prefer males with large, colorful tales while other female peacocks prefer males with no tail at all. Females are beginning to only mate with the type of males with the tail they prefer. What type of reproductive barrier is this?

• behavioral isolation
• hybrid sterility 
• temporal isolation
• mechanical isolation 

The flowers of pink tulips open in the morning, while the flowers of lavender tulips open in the early afternoon. The bees that pollinate these tulips cannot carry pollen back & forth between the two types of tulips because of their flowers being closed at different times of day. What type of reproductive barrier is this?

• behavioral isolation
• hybrid sterility 
• temporal isolation
• mechanical isolation 

The term for the formation of new and distinct species over the course of evolution is...

• speciation
• biological species concept
• reproductive barrier
• natural selection