The organism in the accompanying figure belongs to which group?
a. excavates
b. alveolates
c. stramenopiles
d. green algae
e. amoebozoans
ANSWER: a
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Red coloration in wheat plants is a complex trait influenced by three unlinked genes, each with two different alleles: A and a; B and b; C and c
This Punnett square shows the results of a mating between two plants that are both heterozygous at all three loci. Use the Punnett square to answer the following question: The intensity of the red color phenotype is influenced by only one of the gene products. A. true B. false
What evidence exists that suggests modern agriculture is unsustainable?
A) Fresh water is used for irrigating crops. B) Large amounts of nonrenewable fossil fuels are required. C) Fertilizers and pesticides are inexpensive and easy to obtain. D) More food is produced than can be used.
The pneumonia caused by the influenza virus results from the accumulation of fluid and cell debris in the lungs. This occurs during the lysogenic life cycle of the virus.
Answer the following statement true (T) or false (F)
The ultimate source of all new alleles is
A) mutation. B) chromosomal duplication. C) genetic drift. D) natural selection.