AQA A-Level Biology 3.4 Genetic information, variation and relationships between organisms quiz
14questions. Pick an answer and you'll see why right away.
Which statement correctly describes DNA in a prokaryotic cell compared with DNA in the nucleus of a eukaryotic cell?
A gene is best defined as:
The genetic code is described as degenerate. This means:
During transcription in a eukaryotic cell, which strand is used and what replaces thymine in the product?
What is the role of splicing in eukaryotic gene expression?
During translation, the anticodon of a tRNA molecule:
A substitution mutation in a gene results in no change to the polypeptide. The most likely reason is that:
Why does a single base deletion usually have a greater effect on a polypeptide than a single base substitution?
An organism has a diploid number of 12. How many different chromosome combinations are possible in its gametes from independent segregation alone?
Which two processes during meiosis are the sources of genetic variation, and in which stages do they occur?
Antibiotic resistance spreading through a bacterial population is an example of:
Two organisms can mate and produce offspring, but the offspring are infertile. This shows that the two organisms:
Which list gives the taxonomic hierarchy in the correct order from largest to smallest?
Courtship behaviour is used in classification mainly because it: