Question 1
The image shows a phylogenetic tree representing the evolutionary relationships among various species. In a phylogenetic tree, what do the branch lengths typically represent?
- A) Genetic diversity
- B) Time since divergence
- C) Geographic distribution
- D) Number of shared traits
Question 2
The image shows an example of a chromosome translocation event. In the context of genetics, what happens during a reciprocal translocation?
- A) Two non-homologous chromosomes exchange segments
- B) A chromosome fragment is lost
- C) A chromosome duplicates itself
- D) An extra chromosome is added
Question 3
What is the significance of chromosomal inversions in speciation?
- A) They have no impact on speciation
- B) They can facilitate speciation by creating reproductive barriers
- C) They prevent speciation by maintaining gene flow
- D) They only occur in asexual organisms
Question 4
Which factor is a key contributor to the variation in genome sizes among different species?
- A) Number of chromosomes
- B) Complexity of the organism
- C) Number of genes
- D) Chromosome length
Question 5
What does the Human Genome Project primarily aim to do?
- A) Clone humans
- B) Sequence the entire human genome
- C) Develop new medicines
- D) Study human genetics