Which of the following statements is NOT a
possibility even though the phylogenetic
lineages for hominins are not definitive?
a. Homo preceded Australopithecus.
b. Homo sapiens is the most recent.
c. Australopithecus is probably more ancient
than Homo.
d. Homo erectus preceded Homo sapiens.
e. Homo and Australopithecus may have
evolved at the same time.
A
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Mismatch repair, base excision repair, and nucleotide excision repair are similar in that (select all that apply):
A. each repairs a single mismatched base. B. each repairs a short strand of mismatched nucleotides. C. each repairs multiple mismatched or damaged bases across a region. D. each uses an undamaged segment of DNA as the template to repair a damaged segment of DNA. E. none of these.
It's known that teenagers and young adults are impulsive in nature, take unnecessary risks, and are, therefore, more susceptible to drug addiction
Which lobe of the cerebrum do scientists hypothesize as reason for this because this lobe doesn't fully develop until the early twenties? A) temporal B) occipital C) parietal D) frontal
Both budding yeast and the bacteria E. coli are unicellular life. Which of the following statements explains why budding yeast can undergo sexual reproduction while E. coli cannot
(a) Unlike E. coli, budding yeast can alternate between a diploid state and a haploid state. (b) Unlike E. coli, budding yeast cannot multiply by undergoing cell division. (c) Unlike E. coli, haploid budding yeast cells can undergo meiosis to produce the gametes necessary for sexual reproduction. (d) E. coli DNA is unable to undergo homologous recombination, making it incapable of producing gametes.
Many biologists believe that macroevolution is just an accumulation of microevolutionary events. Does this mean they assume a gradualist perspective over a punctuated one? Why or why not?
What will be an ideal response?