Defining the genome as "the genetic material transmitted from parents to offspring" excludes which life form?
A. bacteria
B. archaeons
C. eukaryotic organelles
D. viruses
E. All of the answer options are included in
this definition.
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What would likely occur if an anammox bacterium was unable to use ladderane lipids?
A) Ammonium rather than ammonia would be used due to ammonia toxicity to other cellular processes. B) It would require a different source for carbon assimilation. C) Rates of anammox would be considerably slower due to a lack of localized metabolism. D) Reactive nitrogen species would kill the cell.
Which statement about DNA methylation is true?
a. DNA methylation is limited to the original cell and cannot be inherited by offspring. b. DNA methylation promotes transcription by unwinding DNA from histone proteins. c. DNA methylation occurs in CpG islands located within the promoter region of genes. d. DNA methylation always results in genes that are silenced and inactive.
TRAIT SPECIESABCDE101111200111310101401111500001610101 The table shows the distribution of traits (A-E) in six extant species (1-6). A "0" indicates the ancestral condition, and a "1" indicates the derived condition. Which pair of species shares the greatest number of derived characters (synapomorphies)?
A. 6 and 3 B. 6 and 1 C. 5 and 6 D. 1 and 4 E. 5 and 1
The exchange of genetic material during crossing over causes which of the following?
A) homozygosity B) genetic variation C) heterozygosity D) stasis