Home › Tamil Nadu SSLC (Class 10) › Biology › Breeding and Biotechnology › The mating of closely related animals within the…
The mating of closely related animals within the same breed for about four to six generations is called:
AOutbreeding
BHeterosis
CCross breeding
DInbreeding
Answer & Solution
Correct answer: D. Inbreeding
1. Inbreeding is defined as mating closely related animals of the same breed for 4-6 generations.
2. It accumulates superior genes and exposes harmful recessives for elimination.
3. Outbreeding and cross breeding involve unrelated animals or different breeds, and heterosis is the resulting vigour, so they are wrong.
4. Hence the answer is D.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit "Breeding and Biotechnology", p.297_
Related questions
In hexaploid wheat where 2n = 6x = 42, the haploid (n) and basic (x) chromosome numbers arThe Bt gene used to make insect-resistant GM crops is obtained from which organism?Golden Rice is a genetically modified crop developed by inserting a gene for the synthesisDNA fingerprinting relies mainly on the variation between individuals in their:DNA fingerprinting, a quick method to distinguish individuals, was developed by:In treating neurodegenerative disorders such as Parkinson's and Alzheimer's disease, whichEmbryonic stem cells, which can develop into any cell type of the body, are derived from wGene therapy that targets and corrects a defective gene in non-reproductive body cells is