Question

Define heredity. Explain the
mechanism of hereditary changes.
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Answer 1

Answer:

the passing on of physical or mental characteristics genetically from one generation to another.

Explanation:

mechanisms of heredity changes:-

-Mating

-Growth

-Chromosomes

-Genes

-Change factors

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Answer 2

Heredity

Explanation:

• The process of transmission of characters from parents to offsprings, through reproduction .
• Heredity changes can occur due to - Natural selection, genetic drift, mutations and recombination.
• Natural selection - survival of the fittest gene , organisms having fittest gene has the advantage of survival.
• Genetic drift- sudden change in gene in a small population.
• Mutation- Sudden inheritable changes giving rise to new allele.
• Recombination- pocess in which pieces of DNA break and recombine and produce new combination of alleles.