Science Questions
All Science MCQs for CTEVT entrance exam.
A cross involving only one pair of contrasting characters is called:
If a cross is made between two hybrid tall plants (Tt), what percentage of offspring will be dwarf?
What is the term for a gene that can only express itself in the homozygous state?
If a homozygous tall plant (TT) is crossed with a homozygous dwarf plant (tt), what will be the genotype of the F1 generation?
A cross between an F1 hybrid and its homozygous recessive parent is called a:
In a dihybrid cross between RRYY (Round Yellow) and rryy (Wrinkled Green), what is the phenotype of the F1 offspring?
How many types of gametes are produced by a plant with the genotype RrYy?
Which of Mendel's laws is based on the results of a dihybrid cross?
What is the phenotypic ratio of a dihybrid cross in the F2 generation?
If a color-blind man marries a woman with normal vision (homozygous), what is the probability that their son will be color-blind?
Which component of a nucleotide differs between DNA and RNA?
In a cross between Tt and tt, what is the expected ratio of phenotypes?
The process of copying a segment of DNA into RNA is called:
Which of the following represents a Klinefelter syndrome chromosome complement?
Down syndrome is caused by the presence of an extra chromosome at which position?