Mendelism was rediscovered by
$I.$ Morgan
$II.$ De Vries
$III.$ Correns
$IV.$ Tschermark
Choose the correct option
$I, III$ and $IV$
$I, II, III$ and $IV$
$II, III$ and $IV$
$I, II$ and $III$
The average ratio of male to female individuals based on $XX$ and $XY$ type of sex determination, in total world of human population is
A person is suffering from disease phenylketonuria, which is an autosomal recessive disease. Which of these is lacking in the person?
In human the inheritance of sex linkage takes place through
In Lathyrus odoratus, hybrid blue flowered and long pollen plant is test crossed with homozygous recessive red flowered and round pollen plant then how many parental types are obtained when genes are present in cis stage in parents?
Genes for cytoplasmic male sterility in plants are generally located in