91. Who among the following were the chief advocates of the theory of catastrophism?
92. The difficulty of introducing foreign DNA into significantly large number of recipient cells was overcome through gene transfer by
93. How is free oxygen present into the earth's atmosphere, whereas there was no free oxygen at the time of origin of life?
94. When one gene pair hides the effect of the other unit, the phenomenon is referred to as
95. Change in basic sequence of Gene is known as
96. The widely accepted big-bang hypothesis proposes that the present array of distant galaxies was preceded by a relatively small very dense central mass called 'yelm' which is composed of
97. Spontaneous mutations which occur in somatic cells are called
98. The phenomenon by which a fragment of bacterial DNA is transported to a recipient cell being included within the capsid of the phage infecting the donor cell is known as
99. Which chromosomal combination is responsible for maleness in man?
100. Consider the following statements
1. Homologous organs are common origin with different functions.
2. Analogous organs are different origin but perform similar function in different organisms.
3. Vestigial organs are non-functional and rudimentary organs in an organism which are fully developed and functional in phylogenetically related organisms.
Which of the statements given above is/are correct?
1. Homologous organs are common origin with different functions.
2. Analogous organs are different origin but perform similar function in different organisms.
3. Vestigial organs are non-functional and rudimentary organs in an organism which are fully developed and functional in phylogenetically related organisms.
Which of the statements given above is/are correct?
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