Question

Which of the following can produce a duplicate gene
A. Genetic drift in reproduction
B. neutral mutation during transcription
C.chromosome replication during mitosis
D. Crossing over during mitosis

Answer 1

1. Which of the following can produce a duplicate gene? (1 point)
(0 pts) chromosome replication during mitosis
(1 pt) crossing-over during meiosis
(0 pts) neutral mutation during transcription
(0 pts) genetic drift during reproduction
1 /1 point
2. When researchers use a molecular clock, what are they measuring? (1 point)
(1 pt) the time that two species have been evolving independently
(0 pts) the time that fossils have been buried
(0 pts) the number of neutral mutations in a genome
(0 pts) how long ago an organism went extinct
1 /1 point
3.
Species A GCTGCCCAT
Species B ATTGCCCGT
Species C ACTGACCGT

The table above shows the differences in a particular DNA sequence between three species. Which of the following best summarizes what can be inferred from comparing those differences? (1 point)
(0 pts) You can infer that A and C shared a more recent common ancestor than A and B or B and C.
(1 pt) You can infer that B and C shared a more recent common ancestor than A and B or A and C.
(0 pts) You can infer that A and B shared a more recent common ancestor than A and C or B and C.
(0 pts) You can infer that A and B have been evolving independently longer than C has.
1 /1 point
4. Where do new genes come from? (1 point)
(0 pts) the mutation of existing genes
(0 pts) from another species
(0 pts) the duplication of existing genes
(1 pt) the duplication, and then mutation, of existing genes
1 /1 point
5. A group of related genes is called a (1 point)
(0 pts) sister group.
(0 pts) duplicated gene group.
(1 pt) gene family.
(0 pts) gene class.
1 /1 point

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