The first definite proof of mutagenic action of $X$-rays was given by
Muller
Hooker
Lister
Leeuwenhoek
If the ratio between $X$-chromosomes and complete set of autosome is $0.5$. Then the individual will be
When an allele fails to explain itself in presence of the other allele, the former is said to be
When closely placed genes on the same chromosome are inherited together the phenomenon is known as
Gynaecomastia condition can develop due to
In which one of the following combinations (a-d) of the number of the chromosomes is the present day hexaploid wheat correctly represented?
Combination | Monosomic | Haploid | Nullisomic | TrisomicZ |