different species use different strategies to determine sex of a new born individual
Answers
Different species use different strategies to determine the sex of a new born individual.
There are different types of sex determination in organism like :
1. Environmental based sex determination.
2.Genetic based sex determination.
Environmental based sex determination:
1. In some reptiles, the temperature at which the fertilized egg is incubation before hatching plays a very important role in determination of sex of new born.
2. In turtle, high incubation temperature leads to development of female offspring.
On the other hand , in case of lizard, high incubation results in male offspring.
3. In some animals like snails, individual can change sex indicating that sex is not determineddetermine genetically.
Genetic based sex determination :
For example in human beings , the sex of individual is largely genetically determined.
In human beings , sex chromosomes are in men ( XY) in women (XX). The sex of new born is determined by what they inherit from their father.
X chromosome from father results in baby girl. (X from mother and x from father).
Y chromosome from father results in baby boy. ( X from mother and Y from father).
In grasshoper ( XO - male, XX - female).
Hope it's clear.
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