Molecular Biology Answers

Smallest gene affected by mutation is-
A)Muton B)Cistron C)Recon D)Exon

In DNA segment of six coils,22 bp are linked by two hydrogen bonds.How many cytosine bases would be present-
A)22 B)38 C)44 D)76
Please explain.

If there are 120 adenine molecules in B-DNA double helical structure showing 20 coils,what is pyrimidine nucleotides forming three hydrogen bonds in it-
A)80 B)100 C)120 D)140

Please explain.

1)Adenine is 30%.What would be percentage of guanine?
A)10% B)20% C)30% D)40%

2)In a DNA molecule cytosine is 18%.Percentage of adenine would be-
A)32% B)64% C)36% D)18%

3)Total amount of A and T in DNA is 45%.Amount of Guanine will be-
A)22.5% B)27.5% C)45% C)55%

4)In a DNA molecule Adenine is 31% and Guanine is 40%.What would be percentage of cytosine?
A)19% B)40% C)36% D)50%

Please explain easily.

What would happen if in a gene encoding polypeptide of 50 aminoacids 25th codon (UAU) is
mutated to UAA ?Explain.

Describe how a monomer is the basic unit of all macromolecules.

A particular poison works by interfering with the enzyme required to synthesize tRNA. AT which step in protein synthesis will the process be stopped?

A) Elongation
B)Termination
C) Initiation
D)Replication

Hello,

I was wondering if you could answer the following question:
How do the cell organelles (apart from the nucleus and mitochondria) found in a human form? Does the nuclear DNA encode for the formation of these organelles (eg Golgi apparatus, Microtubules, cilia etc) in an individual?
Thanking you in advance for your time and help!

Hypothetical DNA sequence (for one strand) for two humans is given. Which of the following type of variation is represented by these sequences?
A- ATGCTATATATTTAAITATGCTTCC
B- ATGCTATATAATTAAYTATCCTTCC
1. VNTR
2. Satellite DNA
3. SNP’s
4. Repetitive DNA