LHS HB Macroevolution

T9. Which type of speciation occurred when maggot flies living on harthorns began to feed on apples?

• Allopatric
• Sympatric

T9. What type of speciation involves geographic isolation?

• Allopatric
• Sympatric
• Both

T9. What type of speciation is this?

• Allopatric speciation
• Sympatric speciation
• Polyploidy
• Adaptive radiation

T9. What type of speciation involves reproductive isolation?

• Allopatric
• Sympatric
• Both

T9. Which type of speciation occurred when a few finches were blown from the coast of South America to the Galapagos Islands and then evolved into 14 different finch species?

• Allopatric
• Sympatric

T9. What type of speciation involves isolation due to behavior such as sexual selection or habitat differentiation?

• Allopatric
• Sympatric
• Both

T10. What are prezygotic isolating mechanisms?

• They prevent reproductive attempts and make it unlikely that fertilization will be successful if mating occurs.
• When animal genitalia or plant floral structures are incompatible, reproduction can not occur
• Courtship patterns used to allow male and female to recognize one another
• A biological trait evolves in two unrelated species as a result of exposure to similar environments

T10. What are postzygotic isolating mechanisms?

• A diploid cell resulting from the fusion of two haploid gametes
• Barriers that prevent the formation of a fertile offspring
• They prevent reproductive attempts
• The mating between two species

T10. What explains Reproductive isolation?

• A biological trait evolves in two unrelated species as a result of exposure to similar environments
• Barriers that prevent species from producing a fertile offspring or producing an offspring at all.
• Barriers that prevent the formation of a fertile offspring
• The mating between two species

T11. Which best defines homologous structures

• structures with same function different ancestors
• reduced form of a structure indicating shared ancestry
• adapting to surrounding
• similar structures inherited from a common ancestor