Variation In Reproduction | Heredity and Evolution | CBSE Class 10 Science | Biology | Chapter 9 Dear Student,
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Hello students, here in this video we are going to study a very important topic as, Reproduction, a variation in reproduction from chapter Heredity and Evolution of CBSE Class 10 Science.
Let's start it with some important terms, as
Genetics
Branch of science that deals with Heredity and variation.
Heredity
It means the transmission of features/ characters/ traits from one generation to the next generation.
The most obvious outcome of the reproductive process still remains the generation of individuals of similar design. The rules of heredity determine the process by which traits and characteristics are reliably inherited.
EVOLUTION
We have noted that there is an inbuilt tendency to variation during reproduction, both because of errors in DNA copying, and as a result of sexual reproduction. Let us now look at some consequences of this tendency.
Evolution is the sequence of gradual changes that take place in primitive organisms, over millions of years, in which new species are produced.
Reproduction
Reproduction is a life process that enables an organism to reproduce its own offspring. Thus, they continue their species without extinction. Reproduction can take place by the participation of a single parent or two parents. Based on this, reproduction can be classified into two types.
1. Asexual reproduction: A type of reproduction where a single parent is divided by itself and reproduces its offspring.
2. Sexual reproduction: A process where two parents participate in producing their offspring.
Variation
The differences among the individuals of a species/population are called variations. It takes place due to environmental changes, crossing over, and recombination of genes and mutation.
All the above-mentioned topics are described in an interactive and efficient manner so that the students could easily understand them.
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