List of top Botany Questions on Molecular Biology

Given diagram shows a pair of homologous chromosomes during meiosis. Maximum crossing over will occur between genes

Chromosomes number in endosperm cell of ``X'' plant and the chromosomes number of gamete of plant ``Y'' are equal. Plants X and Y respectively are

Identify correct statements from the following:
I. In pineapple fruit is syconus and fleshy peduncle is edible
II. In rice fruit is caryopsis and endosperm is edible
III. In coconut fruit is drupe and mesocarp is edible
IV. In cashew fruit is nut and cotyledons, false fruit are edible

Identify the functions not related to Cytoskeleton?
I. Mechanical support
II. Cell motility
III. Intercellular transport
IV. Mesosome formation

Resistance to yellow mosaic virus and powdery mildew were induced by mutations in:

Which of the following statements are correct regarding protein synthesis in eukaryotes?
A. 3'-Cap of mRNA present.
B. Ribosomes of 80S type dissociate into 40S and 60S subunits.
C. Translation is not simultaneous with transcription.
D. Initiation codon of mRNA is recognised by anticodon of Met-tRNA.
Choose the correct answer from the options given below:

Which of the following mutations is most likely to contribute to the development of cancer?

A eukaryotic cell is exposed to a chemical that inhibits the 5' capping of pre-mRNA. What is the most likely effect on translation?

The enzyme responsible for synthesizing RNA primers during DNA replication is -

Sequence the following events involved in a point mutation in DNA.
A. Alteration in the amino acid sequence of a protein.
B. Change in mRNA codon during transcription.
C. Substitution of a single nucleotide in the DNA sequence.
D. Possible disruption of protein function or structure.
Choose the correct answer from the options given below: