Biology
Practice Biology MCQs from the Science syllabus.
What is the genotypic ratio of a Mendelian monohybrid cross in the F2 generation?
Which Mendelian law states that the two alleles for a trait separate during gamete formation?
Mendel's Law of Independent Assortment is best demonstrated by a:
What is the phenotypic ratio of a dihybrid cross in the F2 generation?
If a red-flowered plant is crossed with a white-flowered plant and the offspring are all pink, this is an example of:
A cross used to determine whether an organism expressing a dominant trait is homozygous or heterozygous is called a:
Which of the following is an example of a sex-linked recessive disorder?
How many hydrogen bonds form between Guanine (G) and Cytosine (C) in DNA?
Which of the following is a reason why Mendel chose pea plants for his experiments?
What is the genotype of a carrier female for color blindness?
In a cross between $Tt$ and $Tt$, what is the probability of obtaining a dwarf plant ($tt$)?
What is the result of a cross between a homozygous tall plant and a heterozygous tall plant?
A sudden change in the structure of a chromosome or gene is called:
The point where two sister chromatids are joined together is the:
In a human karyotype, how many pairs of autosomes are there?