Q3 of 26 Page 284

How characters are inherited?

Heredity is the transmission of characters from parents to offspring. When the gametes of both parents fuse and form zygote, the characters are passed to the next generation. Organisms inherit the characters from their parents through genes. It is through inheritance that each species maintains the characteristics from generation to generation. Genes are the unit of inheritance. Sometimes, not all the characters inherited are expressed, but they are still present in the genetic makeup of the organism.


More from this chapter

All 26 →
3

Will geographical isolation be a major factor in the speciation of an organism that reproduces asexually? Give reason for your answer.

 3

Does geographical isolation of individuals of a species lead to the formation of a new species? Provide a suitable explanation for your answer.

 3

Write a note on heredity.

 4

(a) Explain the terms ‘analogous organs’ and ‘homologous organs’ with examples.

(b) In what way analogous organs give evolution?