When a progeny of F1 is crossed with the homozygous recessive parent, it is called test cross. Such a cross is useful to determine the genotype of an unknown i.e., whether it is heterozygous, or homozygous dominant for the trait.
Water is an important part of life. It contains several dissolved nutrients that are required by human beings, plants, and animals for survival. Demineralised water is free of all soluble...
Dominance
Recessive
A dominant factor or allele expresses itself in the presence or absence of a recessive trait.
A recessive trait is able to express itself only in the absence of a dominant...
(i) Fats are store in body and are used as emergency sources of energy.
(ii) Fats are important sources of energy for long duration activities and important for proper function of...
A change/feature/property of an organism that may have helped it to adopt to an environmental condition can also become useful for a completely different function in the future. For example: feathers in...
