Speciation

Which of the following is NOT part of the Biological Species Concept?

• Must meet in nature & have gene flow
• Must be able to reproduce & share a gene pool
• Offspring must be sterile
• Offspring must be fertile

Fruit flies are beginning to live & mate on different types of fruit on the floor of the Amazon. Bigger fruit flies prefer rotting mangos, while smaller fruit flies prefer rotting bananas. What type of reproductive barrier is this?

• habitat isolation
• temporal isolation 
• gametic isolation
• mechanical isolation 

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 

Tags

NGSS.MS-LS4-2

The pollen (sperm) of a flowering plant cannot fertilize the egg cell of a nearby flowering plant of its kind. What type of reproductive barrier is this?

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

When reproductive barriers separate a population of a species in nature, the species no longer share a... 

• taxa
• gene pool 
• phylogenetic tree
• species 

Tags

NGSS.HS-LS4-1

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 

Tags

NGSS.MS-LS1-4

When a zebra & horse mate, they create a zorse. Zorses are most often sterile. What type of reproductive barrier is this?

• behavioral isolation
• hybrid sterility 
• 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 

Tags

NGSS.MS-LS1-4

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

Tags

NGSS.HS-LS4-5