A child resembles grandparents more than parents. Explain genetically.
This happens because genes are inherited from both parents, and parents themselves carry genes from grandparents. Some of these genes may reappear in the child.
Key Idea
| Term | Meaning |
|---|---|
| Inheritance | Transfer of traits from parents to offspring |
| Alleles | Different forms of a gene |
| Recombination | Mixing of parental genes |
How it Happens
| Source | Contribution |
|---|---|
| Father | 50% genes (from his parents) |
| Mother | 50% genes (from her parents) |
| Grandparents | Indirect genetic contribution |
Stepwise Understanding
Parents carry genes from their own parents (grandparents)
During reproduction, genes mix randomly
Child receives combination of these genes
Some traits from grandparents may become dominant or visible
Child may resemble grandparents more than parents
Important Concept
Genes do not always express in the same pattern every generation, variation occurs due to recombination.
Real Insight
Sometimes facial features, height, or habits match more with grandparents, which looks surprising but is completely normal genetically.
So resemblance depends on which gene combinations get expressed, not just immediate parents.