The correct base pairing for DNA is
adenine → thymine and guanine → cytosine
adenine → guanine and thymine → cytosine
adenine → cytosine and guanine → thymine
adenine → adenine and cytosine → cytosine
Correct answer is A
No explanation has been provided for this answer.
25%
50%
75%
100%
Correct answer is B
No explanation has been provided for this answer.
non-heritable
sex-linked
a recessive trait
a dominant trait
Correct answer is D
No explanation has been provided for this answer.
Which of the following is true about blood transfusion?
person of blood group AB can donate blood only to another person of blood group AB
persons of blood groups A and B can donate or receive blood from each other
A person of blood group AB acn receive blood only from persons of blood group A or B
A person of blood group O can donate only to a person of blood group O
Correct answer is A
No explanation has been provided for this answer.
The diseases caused by water-borne pathogens include
gonorrhoea and poliomyelitis
typhoid and syphilis
tuberculosis and cholera
typhoid and cholera
Correct answer is D
No explanation has been provided for this answer.