Question
What is polyploidy?
A. Having an extra set of chromosomes
B. Having an extra sex chromosome
C. Having an extra autosome
D. Having two or more nuclei
Answer/Explanation
Question
An individual is heterozygous for two linked genes \(\frac{AB}{ab}\) To investigate the frequency of crossing over, a test cross is carried out between the individual and another that is homozygous recessive for both genes. What are the possible recombinants in the offspring of this cross?
Answer/Explanation
Answer/Explanation
Question
Which mechanism prevents polyspermy?
A. Polar body formation
B. The acrosome reaction
C. Spermatogenesis
D. The cortical reaction
Answer/Explanation
Question
Cetuximab is a type of monoclonal antibody used to treat cancers of the large intestine.
How are these monoclonal antibodies obtained?
A. From hybridoma cells produced by fusion of cancer cells
B. From hybridoma cells produced by fusion of tumour cells and plasma cells
C. From plasma cells produced by small mammals in response to antigens from cancer cells
D. From hybridoma cells produced by small mammals in response to antigens from cancer cells
Answer/Explanation
Question
Photolysis and carboxylation of RuBP occur during photosynthesis. Where in the chloroplast do these reactions occur?
