$XO$ type of sex determination can be found in:
Birds
Grasshoppers
Monkeys
Drosophila
Mongoloid condition is related to or In mongolism a patient shows
Haemophilia is caused due to lack of
Improvement of genetic characters and present day generation on the basis of best nutrition and training is called
Which of the following type of mutation involves the reverse order of genes in a chromosome?
Lathyrus odoratus is an example of which of the following genes