A hereditary disease which is never passed on from father to son is
Autosomal linked disease
$X$-chromosomal linked disease
$Y$-chromosomal linked disease
None of these
Sex chromosomes of a female bird are represented by
How many linkage groups are present in Drosophilla
When a segment of a chromosome breaks and later rejoins after $180^{\circ}$ rotation,it is known as
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?