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AQA A Level Biology复习笔记4.5.1 Courtship
Category:
A-level课程
,
教材笔记
,
福利干货
Date: 2022年6月27日 下午12:21
Courtship
Organisms belong to the
same species
if they interbreed in their natural habitat to produce
fertile offspring
The process of successful interbreeding or mating is preceded by some form of courtship behaviour
Courtship
in animals is a behaviour that eventually results in mating and reproduction
It can be a very simple process that involves a small number of visual, chemical or auditory stimuli
It can also be a highly complex sequence of acts by two or more individuals, which are using several modes of communication
Many birds of paradise have intricate and impressive courtship rituals
Courtship can play a major role in
species recognition
Courtship Behaviour in
Drosophila
There are several different species of fruit fly within the genus
Drosophila
It is extremely difficult to tell the different species apart from one another by their physical appearance
However, the
different species
of fruit fly have
different courtship rituals
which aid
species recognition
Before mating the male fruit fly performs a dance: he vibrates his wings, alters his body position and licks the female
This sequence of events performed by the male is controlled by several genes and is
specific to each species
A female will not respond to or mate with a male that displays an incorrect courtship dance
Females also have certain actions that she goes through to tell the male she is not interested which is understood by the male
转载自savemyexams
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