What type of selection occurs when individuals with intermediate phenotypes are favored over extreme phenotypes? (Two words)

What type of selection occurs when individuals with both extreme phenotypes are favoured over intermediate phenotypes? (Two words)

What type of selection occurs when individuals with one of the extreme phenotypes are favoured over the other extreme phenotypes? (Two words)

What type of selection increase genetic variation and leads to speciation? (Two words)

What is the factor that lead to speciation, which prevent mating between different species and produce fertile offspring? (Two words)

What is the type of reproductive isolation that prevent mating between different species due to different time of mating ? (Two words)

What is the type of reproductive isolation that prevent mating between different species due to different pattern of courtship? (Two words)

What is the type of reproductive isolation that form infertile hybrid? (Two words)

What is the type of reproductive isolation that form fertile first generation but the second generation is infertile? (Two words)

What is the factor of speciation that can form a fertile hybrid by doubling the chromosomal number? (One word)

What is the factor of speciation that causes arises of many species from a single species due to adaption? (Two words)

What is the factor of speciation that can change the frequency of allele due to random event, especially in small population? (Two words)

What is the effect that drastically reduced the population size due to disaster, causing the surviving population has different allele frequency from the original population? (Two words)

What is the effect when a small group of individuals migrated from a large population, and form a new population that has different allele frequency from the original population? (Two words)