Plant species a has a diploid chromosome number of 12. plant species b has a diploid number of 16. a new species, c, arises as an allopolyploid from a and b. the diploid number for species c would probably be
a. 14. b. 16. c. 28. d. 56.

c. 28

Explanation:

Plant A has a dipoid chromosome number of 12, so its gametes will have an haploid number of 6 chromosomes.

Plant B has a dipoid chromosome number of 16, so its gametes will have an haploid number of 8 chromosomes.

The new species C arises as an allopolyploid from A and B. An allopolyploid usually originates from the breeding of two different species.

In this case, a gamete from plant A combines with a gamete from plant B to form a hybrid with 14 chromosomes (6 from A and 8 from B). These chromosomes are unpaired, so the hybrid is sterile.

In order to become a fertile diploid individual of species C, the most common mechanism is polyploidization, where the genome duplicates. That way, the resulting plant C has a diploid number of 14 x 2 = 28 chromosomes, of which 12 are A and 16 are B.

humans can cause extinction of a species through overharvesting, pollution, habitat destruction, introduction of invasive species (such as new predators and food competitors), overhunting, and other influences. explosive, unsustainable human population growth is an essential cause of the extinction crisis.

explanation:

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