The tendency of organisms to resemble their parents in all fundamental features is called:
Heredity
Genotype
Phenotype
Inheritance
The mutations are mainly responsible for
constancy in organisms
variation in organisms
increasing the population rate
maintaining genetic continuity
Recombinant DNA is obtained by cleaving the pro-DNA by
primase
exonucleases
ligase
restriction endonuclease
In humans, there are two type of sex chromosome, called X and Y chromosomes. A person with two X chromosomes is called:
Female
Male
Autosomes
All of these
During replication of DNA, its two strands separate. Each of these serves as a template for the formation of new strands. Such type of replication is called:
Non-conservative
Semi-conservative
Flexible
Conservative
A test cross involving two traits is known as:
Dihybrid test cross
Monohybrid test cross
Back cross
E. coli about to replicate was placed in a medium containing radioactive thymidine for five minutes. Then it was made to replicate in a normal medium. Which of the following observation shall be correct?
Both the strands of DNA will be radioactive
One strand radioactive
Each strand half radioactive
None is radioactive
DNA replication is
Conservative and discontinuous
Semi-conservative and semi discontinuous
Semi-conservative and discontinuous
The hybrid test cross ratio will be:
9:3:3:1
1:1
1:1:1:1
2:1:1
Which contribute to the success of Mendel?
Qualitative analysis of data
Observation of distinct inherited traits
His knowledge of Biology
Consideration of one character at one time
