Non-random Mating and Reproductive Isolation Quiz

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What is the major factor that may limit gene flow between apple maggot fly species that use different hosts but share many alleles?

Genetic mutations

Subtle habitat differences (correct)

Temporal differences

Reproductive isolation

Which concept defines rapidly diverging species based on phylogenetic criteria?

Hybridization concept

Biological species concept

Gene flow concept

Phylogenetic species concept (correct)

According to Ernst Mayr's Biological species concept, what defines a species?

Habitat overlap

Gene flow

Temporal isolation

Reproductive isolation (correct)

In the context of incipient species divergence, what causes sympatric speciation?

Reproductive isolation Signup and view all the answers

What type of reproductive isolation mechanism is pollinator preference an example of?

Pre-zygotic barrier to hybridization Signup and view all the answers

Threats to species diversity can arise from which of the following?

Habitat homogeneity Signup and view all the answers

What recent phenomenon has been observed in Cichlid fish populations in polluted lakes?

Enhanced gene flow Signup and view all the answers

What does the text suggest as a post-zygotic barrier to hybridization in terms of African cichlid fish?

Hybrids with lower fitness Signup and view all the answers

What is a characteristic of allopatric speciation?

Depends on physical barriers to gene flow Signup and view all the answers

In the context of African cichlid fish, what was a factor contributing to initial divergence among incipient species?

Mating preferences based on visual cues Signup and view all the answers

Which of the following is NOT mentioned as a barrier to hybridization in the context of Hawaiian honeycreepers?

Cloudy water Signup and view all the answers

How did sympatric speciation occur in African cichlid fish according to the text?

By rapid divergence from hybridization events Signup and view all the answers

What is a significant threat to species diversity in California Mimulus (monkeyflowers) according to the text?

Cloudy water diminishing visual cues to mating preferences Signup and view all the answers

Which process involves physical or external barriers to gene flow?

Allopatric divergence Signup and view all the answers

In the context of genetic divergence, what does clinal variation refer to?

Variation based on geographic location Signup and view all the answers

What type of mating may counter intermating between individuals with distinct phenotypes?

Assortative mating Signup and view all the answers

What is a key factor that influences the adaptive process according to Antonovics and Bradshaw (1970)?

Heritable variation of Zinc tolerance Signup and view all the answers

How does assortative mating affect subpopulations?

It may lead to divergence by mating between like phenotypes Signup and view all the answers