Serratia marcescens can be identified by its distinctive blue-green pigment pyocyanin
Indicate whether the statement is true or false
FALSE
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DNA replication is said to be semiconservative because ____
a. the number of nucleotides within genes remains constant b. half of the DNA in a cell comes from one parent and the other half from the other parent. c. the same process of DNA replication is used by all organisms d. the total amount of DNA within an individual remains the same e. each new DNA molecule is composed of one old strand and one new strand
Which genus or genera of hominin is/are most consistently associated with stone tools?
A) Homo B) Paranthropus C) Australopithecus D) Sahelanthropus E) All of the above.
What is needed to estimate species relatedness with a molecular clock?
A. DNA accumulates mutations at a regular rate B. known mutation rate for a gene C. the number of differences in DNA sequences for a gene in two species D. the same gene identified in two species E. All answers are correct.
What was the approximate size of the human population in the year 2008?
A) 1.6 billion B) 2.6 billion C) 3.6 billion D) 6.6 billion E) 10 billion