List of top Genetics, Cellular and Molecular Biology Questions

A disease-associated allele shows X-linked recessive inheritance. If the mother is a carrier of the disease, the father is genetically normal, and the child born is a son, then the probability that he is born with the disease is . (rounded off to one decimal place)
Which of the following is/are posttranslational modification(s) involved in epigenetic control of gene expression?
Messenger RNAs (mRNAs) translate to generate polypeptides and the translation terminates at the UGA, UAG or UAA stop codons. The AGA codon acts as additional stop codon in the mitochondria. The longest possible polypeptide(s) that can be hypothetically translated in the cytosol and/or mitochondria, from the given full length mRNA sequence (36 nucleotides) is/are

5'-AACACCAUGACCCAUGUGGCGAGACGGUAGUUAAAA-3'
The RNA sequence below depicts the part of a 330 nucleotides long mRNA and it encodes the C-terminal portion of a protein.
5'-... ... ... AAC ACC ACG ACC CAU GUG GCG AGA CGG UAG-3'
A mutation was identified in this RNA denoted as \(322A \rightarrow U\). This nucleotide change is represented by which of the following class(es) of mutation?
Match the genetic disorders in Column I to the corresponding underlying cause in Column II.

Column IColumn II
P. Klinefelter Syndrome1. X-chromosome insufficiency
Q. Turner syndrome2. DNA helicase mutations
R. Bloom syndrome3. Nucleotide excision repair defects
S. Xeroderma pigmentosum4. Extra X chromosome(s) in a male
Match the biomolecules in Column I with their function given in Column II.

Column IColumn II
P. Lectins1. Acts as ATP dependent pump to efflux out small molecules
Q. P-glycoprotein2. Targets lysosomal enzymes to their destination
R. Digitoxigenin3. Specific carbohydrate binding proteins
S. Mannose 6-phosphate4. Inhibits Na+-K+ pump
Which of the following is/are extra-cellular matrix protein(s)?
The RNA primer synthesized during bacterial DNA replication is removed by .
Methods of providing patient education is
By which process miss-incorporated base can change into a permanent mutation?
Which of the following technique is suitable for identifying mRNA molecule in a sample?
The half-life equation for first order kinetics is
Buffer capacity is given by the equation
The number of degrees of freedom required for description of pure gas are