In humans, hair texture is an incompletly
dominant trait. Curly hair is the homozygous
dominant trait; smooth hair is homozgous
recessive; wavy hair is heterozygous. If two
wavy haired individuals have children what is
the expected phenotype ratio?
a. 1:2:1
b. 3:1
c. 4:0
d. 1:1
e. 1:0
B
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Which group of microorganisms would the Calvin cycle LEAST likely be found in?
A) anoxygenic Bacteria B) chemolithotrophic Bacteria C) cyanobacteria D) hydrocarbon catabolizing Bacteria
This defect means that there is a problem at the level of __________
a. nucleotides b. amino acids c. triglycerides d. glucose molecules
Certain gases in the upper atmosphere allow sunlight to pass through to Earth's surface, but prevent heat from escaping. This is known as
A) global positioning. B) desertification. C) the greenhouse effect. D) thermal inversion. E) eutrophication.
Purine or pyrimidine analogs:
A) act as antimetabolites B) inhibit ribosome function C) disrupt cell membrane function D) inhibit cell wall function