pls ans the following qns
1) what is a gene?
2)what is meant by analogous organs
3)describe Darwin's theory of evolution
pls ans correctly
class 10
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pls ans the following qns
1) what is a gene?
2)what is meant by analogous organs
3)describe Darwin's theory of evolution
pls ans correctly
class 10
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Answer:
1) A gene is a basic unit of heredity and a sequence of nucleotides in DNA or RNA that enco'des the synthesis of a gene product, either RNA or protein. During gene expression, the DNA is first copied into RNA.
2)Analogous organs are the opposite of homologous organs, which have similar functions but different origins. An example of an analogous trait would be the wings of insects, bats and birds that evolved independently in each lineage separately after diverging from an ancestor without wings.
3)Charles Darwin's theory of evolution states that evolution happens by natural selection. Individuals in a species show variation in physical characteristics. ... Individuals that are poorly adapted to their environment are less likely to survive and reproduce.
Answer:
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Explanation:
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