Question 2 Not yet answered Points out of 1.00 Remove flag For each situation, i

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Question 2 Not yet answered Points out of 1.00 Remove flag For each situation, indicate the type of speciation described. The speciation of North American allopatric speciation lacewings is believed to have been sympatric speciation driven by predation, two variations of coloring were protected against predators while heterozygotes were eliminated quickly. In plants, new species may arise quickly due to multiplication of the entire complement of chromosomes. Rabbits on one island have a colder climate then rabbits on another island. Over time, the two populations of rabbits become separate species. Nine species of treehoppers (plant- feeding insects) are believed to have diversified as a consequence of changes in plant hosts used for food. A population of lizards is able to cross a small stream, but when the climate changes and the stream becomes a wide river, the lizards on each side of the river diverge into different species.

Explanation / Answer

Ques 2 -

in plants new species arise quickly due to multiplication of entire complement of chromosome

- (polyploidy) sympatric speciation

rabbits on one island have colder climate than rabbits on another island. overtime the two populations of rabbits become new species

- allopatric speciation

nine species of tree hoppers are believed to have diversified as a consequence of changes in plant hosts used as food

- sympatric speciation

a population of lizard is able to cross a small stream..

- allopatric speciation

ques3 - reduced hybrid fertility

ques4-

white potato - chromosome no. 48

kiwi - polyploidy level - 6n

cotton - chromosome no - 52

banana - ancestor haploid no - 11

ques 7 -

two species of orchids - mechanical isolation

one species of drosophila - temporal isolation

Rana aurora breeds in fast moving water - habitat isolation

gaint clams release sperms and eggs - gametic isolation

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