Principles of I...

In human beings sex is determined

Failure of cytokinesis after telophase stage of cell division results in an increase in a whole Set of chromosomes in an organism. The phenomenon is called as 

Select the disease which is caused by recessive autosomal genes when present in homozygous condition.

A pedigree is shown below for a disease that is autosomal dominant. What would be the genetic make up of the first generation?

In the $$F_2$$ generation of a Mendelian dihybrid cross the number of phenotypes and  genotypes are

Occasionally, a single gene may express more than one effect. The phenomenon is called

A cross between two tall plants resulted in offspring having few dwarf plants. What would be the genotypes of both the parents?

In the following pedigree charts, the mutant trait is shaded black. The gene responsible for the trait is 

Mr. Christopher is colourblind and carrier for Phenylketonuria (PKU). What percentage of sperms possesses defective allele for both?

If the husband is PTC taster and wife is PTC non-taster. Their daughters are non-tasters but their son is a taster. This is not related to a sex-linked trait. Out of four a, b, c, d which pedigree is correct?