since the child formed by sexual reproduction is formed by fusion of germ cells, then what is the need for blueprints? only one DNA is sufficient?

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Solution

Child inherit DNA from both the parents. This is essential as some traits are passed from mother and some from father. So to inherit all the characters, DNA of both the parents is essential. Moreover, variations is needed which enhances the capability of an individual and that can be obtained only after mixing of DNA of male and female gametes.

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Similar questions

Q. New individuals formed by asexual method of reproduction have greater similarity among themselves because:
(i) Asexual reproduction involves only one parent.
(ii) Asexual reproduction does not involve gametes.
(iii) Asexual reproduction occurs before sexual reproduction.
(iv) Asexual reproduction occurs after sexual reproduction.

Complete the following chart.

	Asexual reproduction		Sexual reproduction
1.	Reproduction that occurs with the help of somatic cells is called asexual reproduction.	1.	----------------------
2.	-------------------------------------------------------	2.	Male and female parent are necessary for sexual reproduction.
3.	This reproduction occurs with the help of mitosis only.	3.	----------------------------------
4.	----------------------------------------------	4.	New individual formed by this method is genetically different from parents.
5.	Asexual reproduction occurs in different individuals by various methods like binary 5 fission, multiple fission, budding, fragmentation, regeneration, vegetative propagation, spore production, etc.	5.	--------------------------------------

The offsprings formed by asexual reproduction method have greater similarity among themselves because:
(i) asexual reproduction involves only one parent
(ii) asexual reproduction involves two parents
(iii) asexual reproduction involves gametes
(iv) asexual reproduction does not involve gametes
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iv)
(d) (i) and (iv)

Q. What is a clone? Why do offspring formed by asexual reproduction exhibit remarkable similarity?

Question 4
Offsprings which are formed by the asexual reproduction methods have greater similarity among themselves because

(i) Asexual reproduction involves only one parent
(ii) Asexual reproduction does not involve two gametes
(iii) Asexual reproduction occurs before sexual reproduction
(iv) Asexual reproduction occurs after sexual reproduction

(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iv)
(d) (iii) and (iv)

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