Botany MCQs for NEET — Practice Questions with Answers

In a DNA segment amount of adenine is equal to thymine. According to given information adenine and thymine constitutes 45% of DNA. So, guanine and cytosine will constitute 55%. Amount of guanine is equal to cytosine so amount of guanine in DNA will be 55/2 = 27.5%.

AUG is a initiation codon which codes for methionie

Valine → GUU

Histidine → CAU

Phenylalanine → UUU or UUC

A recessive mutant is one which is expressed only in homozygous or hemizygous stage.

Adenine + Thymine = 60%

The amount of guanine + cytosine = 40%

So, the amount of guanine in this DNA will be = 20%

$\frac{\mathrm{A}+\mathrm{T}}{\mathrm{G}+\mathrm{C}}$ is constant (Chargaff’s rule) for a species and also A = T and G = C.

Translocation is brought about by elongation factor G which is also called as translocase.

Centre of DNA Fingerprinting and Diagnostics (CDFD) is located at Hyderabad.

According to Chargaff’s rule,

(A + T) + (G + C) = 100%

(A = T) + (G = C) = 100%

(18% + 18%) + 2G = 100%

36% + 2G = 100%

2G = 100% – 36%

  G = 32%

The arrangement of compounds in ascending order according to their molecular weight is AMP, ADP, ATP, RNA, DNA

The correct answer is 3' CATGGCTAGC 5'