Class 10 > Crash Course: Class 10 > Introduction: Heredity & Evolution
Introduction: Heredity & Evolution Video Lecture - Crash Course: Class 10
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FAQs on Introduction: Heredity & Evolution Video Lecture - Crash Course: Class 10
| 1. What is heredity? |  |
Ans. Heredity refers to the passing of traits or characteristics from parents to their offspring through genes. It is the reason why children resemble their parents in terms of physical features, behavior, and even certain diseases.
| 2. How does heredity occur? | |
Ans. Heredity occurs through the transmission of genetic information from parents to offspring. This genetic information is carried by genes, which are located on chromosomes. During sexual reproduction, the offspring inherit half of their genetic material from each parent, resulting in a combination of traits from both parents.
| 3. What is evolution? | |
Ans. Evolution is the gradual change in the inherited characteristics of a population over successive generations. It occurs through the process of natural selection, where individuals with favorable traits that enhance their survival and reproduction are more likely to pass on their genes to the next generation.
| 4. How does evolution happen? | |
Ans. Evolution happens through the accumulation of genetic variations within a population over time. These variations can arise through mutations, genetic recombination during sexual reproduction, or through the introduction of new genes from another population. Natural selection then acts on these variations, favoring individuals with advantageous traits and leading to changes in the frequency of these traits within the population.
| 5. What is the relationship between heredity and evolution? | |
Ans. Heredity and evolution are closely related concepts. Heredity provides the variation in traits within a population, which serves as the raw material for evolution. Evolution, on the other hand, occurs as these variations are acted upon by natural selection, leading to changes in the genetic makeup of the population over time. Heredity is the basis for variation, while evolution is the process that drives the change and adaptation of species.
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