Name the reproductive isolating mechanism operating in each situation below.

Biology
Tutor: None Selected Time limit: 1 Day

a) One species of frog mates in April, but the another mates in May.

b) Two fruit flies of different species produce sterile offspring.

c) The sperm of a marine worm penetrates eggs of the same species only.

d) One species of flower grows in forested areas, another in meadows.

e) Two species of pheasant perform different courtship dances. 

May 23rd, 2015

a) One species of frog mates in April, but another mates in May.............Temporal isolation 

b) Two fruit flies of different species produce sterile offspring..................Hybrid infertility (Postzygotic barrier) 

c) The sperm of a marine worm penetrates eggs of the same species only...........Prezygotic barrier.

d) One species of flower grows in forested areas, another in meadows..............Geographic isolation 

e) Two species of pheasant perform different courtship dances..................Behavioral isolation

May 23rd, 2015

For question c, what type of pre-zygotic barrier is it?

and for question d, can you explain why it is geographic isolation and not habitat isolation?

May 23rd, 2015

ritically thinking......

c) would be of the mechanical type.

d) would actually be habitat isolation


Thanks for the patience.

May 23rd, 2015

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