Biology
Practice Biology MCQs from the Science syllabus.
The point on a chromosome where the two sister chromatids are attached is called:
Which law of Mendel states that factors for different traits are distributed to gametes independently?
The DNA segment that codes for a polypeptide is specifically known as:
If 30% of DNA has Guanine, what is the percentage of Adenine?
What is the phenotypic ratio of a backcross with a dominant parent?
In a monohybrid cross between a red flower (RR) and a white flower (rr), if incomplete dominance occurs, the F1 phenotype will be:
Which scientist used the fruit fly (Drosophila melanogaster) to study genetics?
Which enzyme is responsible for unwinding the DNA double helix during replication?
In a dihybrid cross, what is the probability of obtaining an offspring with the genotype rryy?
If a heterozygous tall plant (Tt) is self-pollinated, the ratio of pure tall to hybrid tall to pure dwarf in the offspring is:
How many codons are there in the genetic code for translating 20 amino acids?
If a child has blood group AB and the mother has blood group A, what can NOT be the blood group of the father?