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प्रश्न
Why is DNA copying an essential part of the process of reproduction?
उत्तर
DNA copying is an essential part of reproduction as it passes genetic information from parents to offspring. It determines the body design of an individual. The reproducing cells produce a copy of their DNA through some chemical reactions and result in two copies of DNA. The copying of DNA always takes place along with the creation of additional cellular structures. This process is then followed by the division of a cell to form two cells.
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संबंधित प्रश्न
What do you mean by DNA?
Draw a diagram of DNA showing genes.
Define reproduction.
State the importance of DNA copying.
Egg laid after fertilisation is made up of a single cell.
Which of the following organisms reproduce by sexual method and which by asexual method?
Amoeba, Cats, Humans, Hydra, Birds
What is a clone? Why do offsprings formed by asexual reproduction exhibit remarkable similarity?
Why is variation during reproduction beneficial to the species but not necessarily for the individual?
Asexual reproduction is :
(a) a fusion of specialised cells
(b) a method by which all types of organisms reproduce
(c) a method producing genetically identical offspring
(d) a method in which more than one parent are involved
In the list of organisms given below, those which reproduce by the asexual method are :
(i) banana
(ii) yak
(iii) yeast
(iv) Amoeba
(a) (ii) and (iv)
(b) (i), (iii) and (iv)
(c) (i) and (iv)
(d) (ii), (iii) and (iv)
What type of fertilisation takes place in fish?
Define the following:
Regeneration
Bryophyllum can reproduce by its ______.
Multiple choice question.
Presence of beard in boys is a _______.
What is morula?
What is the function of inner cell mass?
Name two organisms that reproduce through budding.
Identify the homologous pair.
Which of the following statements about reproduction in humans is correct?
Give reason for the following:
All multicellular organisms cannot give rise to new individuals through fragmentation or regeneration.
