Humans are _______.
a. Australopithecus
b. Homo erectus
c. Ardipithecus
d. Homo sapiens
e. Homo habilis
Ans: d. Homo sapiens
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After performing a Gram stain of a mixed culture of Gram-positive and Gram-negative cells, you
realize that you omitted the iodine step. What would you expect to see if you observed the slide under the microscope?
a. pink Gram-positive and purple Gram-negative cells b. purple Gram-positive and pink Gram-negative cells c. pink Gram-positive and pink Gram-negative cells d. colorless Gram-positive and pink Gram-negative cells e. colorless Gram-positive and colorless Gram-negative cells
In the disease, _____, motor neurons are destroyed and death by respiratory failure occurs
within three to five years of diagnosis.
Fill in the blank(s) with the appropriate word(s).The position occupied by a gene on the chromosome is called the locus
Indicate whether the statement is true or false
What term is used to describe the situation when the loss of an allele because of selection against one of its phenotypes is balanced by natural selection in favor of the allele for another phenotype?
A) equilibrium frequency B) heterozygote fitness C) restriction fragment length polymorphism D) single nucleotide polymorphism E) balanced polymorphism