Gentics and Evoloution MCQ question and answer with solution | Biology Gk MCQs

Ponnamperurna (1965) demonstrated the production of adenosine by heating dilute aqueous solutions of

Consider the following statements regarding evolution and choose the correct answer:
1. Basically, evolution is the result of the differential survival in each generation of the progeny of the individuals with certain special characteristics
2. The organization of genes in chromosomes and the behaviour of these during cell division do not affect the mechanisms of evolution
3. Due to sexual reproduction there is a tremendous increase in variability
4. Differential survival is always partly due to capacity to adopt to the physical environment

Consider the following statements.
1. Human beings have 23 pairs of chromosomes.
2. Sex chromosome in human male are named XY.
3. Chromosomes are best seen in metaphase.
Which of the statements given above is/are false about chromosomes?

The most commonly used methods for mapping viral chromosomes utilise

Latest ancestor of modern human is

Thymidine dimer formation in DNA is caused by

In prokaryotes, which elongation factors are required for binding the aminoacyl tRNA to the ribosome?

Archaeopteryx had the following reptilian characters

During the formation of initiation complex the mRNA attaches to the 30 S subunit of ribosome which is then called

Consider the following statements regarding the advantages of embryo culture and choose the correct answer:
1. It is the excellent method for understanding the nutritive requirements of the developing embryo
2. Embryo culture gives an insight into the factors which influence embryonic differentiation
3. It promises to be of great economic value as a means of achieving a much wider range of hybrid plants
4. Seeds, which normally remain dormant, can be made to germinate immediately by the help of embryo culture technique