Take this Exam: A-Level Biology: Genes and Protein Synthesis | Zestly

Question 1

During translation, what is the specific role of the tRNA molecule?

Accepted Answer

It carries a specific amino acid to the ribosome.

Question 2

What is the result of non-disjunction during meiosis?

Accepted Answer

The formation of gametes with an abnormal number of chromosomes.

Question 3

Which of the following factors contribute to genetic variation in sexually reproducing organisms?

Accepted Answer

Independent segregation of homologous chromosomes.

Question 4

What is the definition of an allele?

Answer

A segment of DNA that codes for a specific protein.

Answer

The entire set of chromosomes within a cell nucleus.

Answer

One of two or more alternative forms of a gene.

Answer

A protein that regulates the transcription of other genes.

Question 5

In the context of gene mutation, which of the following statements are true?

Answer

Substitution mutations may have no effect on the protein due to the degenerate nature of the code.

Answer

Addition mutations always result in a silent mutation.

Answer

Substitution mutations can result in a premature stop codon.

Answer

Deletion mutations only affect the amino acid at the site of the mutation.