Home › Tamil Nadu SSLC (Class 10) › Biology › Breeding and Biotechnology › Continued inbreeding in animals reduces fertilit…
Continued inbreeding in animals reduces fertility and productivity. This decline is known as:
AHybrid vigour effect
BHeterosis advantage
COutbreeding benefit
DInbreeding depression
Answer & Solution
Correct answer: D. Inbreeding depression
1. The text states that continued inbreeding reduces fertility and productivity.
2. This decline is named inbreeding depression, caused by exposure of harmful recessive genes.
3. Hybrid vigour (heterosis) is the opposite effect, seen in outbreeding, so options A, B and C are traps.
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