One current estimate claims that humans are responsible for the extinction of how many species per
hour?
a. 2
b. 3
c. 4
d. 5
e. 6
E
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A gene that no longer has any function is called
A. broken. B. a terminal gene. C. a pseudogene. D. negatively selected. E. a gene with a stopped molecular clock
As a result of a severe disturbance, a community will ________
A) not be repopulated B) be replaced by organisms in random order C) not change D) undergo succession
In humans with a very mild form of anemia, the hemoglobin molecule is affected by which of the following mutations?
A. Base-pair substitution B. Deletion C. Insertion D. Frameshift mutation E. Intron mutation
The presence of human genes in crop plants and farm animals is an ongoing advancement in scientific engineering. The main techniques used to achieve this include (select all that apply)A) the isolation and insertion of genes for antibodies into plants by bacterial hosts.B) vector transfer of foreign DNA from one organism to another.C) injection of DNA directly into animals which is then spliced into their genome by DNA endonuclease.D) transcriptase and proteins are added to organisms inserting the cDNA into different organisms.
What will be an ideal response?