Grade 11 "Biology - Q3 - Speciation & Reproductive Isolations and Mode of Speciation"

reproduction

primary driving factor for the evolution of certain species of organisms

sexual reproduction

form of reproduction wherein sex cells combine from both parents to create an offspring

asexual reproduction

produces offspring from a single organism. it does not require the presence of sex cells

species

a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding

Ernst Mayer

1942

a species consists of one or more populations whose members interbreed in nature to produce fertile offspring and DO NOT interbreed with members of different species.

Agalychnis callidryas

red-eyed treefrog

zebras

sterile hybrid between zebra & donkey

mule

infertile (?)