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NEET UG BIOLOGY MCQ: MOLECULAR BASIS OF INHERITANCE
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Analyzing
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Assertion: A change in nitrogen base at the
third position of a codon causes change in the
expression of the codon.
Reason: A codon is mostly read by all the three
nitrogen bases.
third position of a codon causes change in the
expression of the codon.
Reason: A codon is mostly read by all the three
nitrogen bases.
View answer and explanation
Correct option: D
If both Assertion and Reason are false
Option D (If both Assertion and Reason are false) is correct because a change in the third position of a codon often does NOT change the amino acid due to wobble base pairing, and a codon is read by all three bases, but the third base has more flexibility.
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The correct sequence of the first six amino acids in HbA beta globulin peptide is
Assertion: The bacteria and other prokaryotes
show high adaptability to the changing
environment.
Reason: Member of kingdom Monera are
efficient in regulating gene expression. Which of the following is not true for DNA polymerase? Dystrophin gene consists of Read the following four statements (i-iv).
i. In transcription, adenosine pairs with uracil.
ii. Regulation of lac operon by repressor is referred to as positive regulation
iii. The human genome has approximately 30,000 genes
iv. Haemophilia is a sex-linked recessive disease
How many of the above statements are correct? Reactive group of RNA is?
show high adaptability to the changing
environment.
Reason: Member of kingdom Monera are
efficient in regulating gene expression. Which of the following is not true for DNA polymerase? Dystrophin gene consists of Read the following four statements (i-iv).
i. In transcription, adenosine pairs with uracil.
ii. Regulation of lac operon by repressor is referred to as positive regulation
iii. The human genome has approximately 30,000 genes
iv. Haemophilia is a sex-linked recessive disease
How many of the above statements are correct? Reactive group of RNA is?