4 Written questions
2 Matching questions
- which of the following best supports the statement that mitochondria are descendants of endosymbiotic bacteria-like cells?
A. mitochondria and bacteria possess similar ribosomes and DNA
B. mitochondria and bacteria possess similar nuclei
C. glycolysis occurs in both mitochondria and bacteria
D. both mitochondria and bacteria have microtubules
E. neither mitochondria nor bacteria possess chloroplasts
- during which of the following periods could the population have been in HW E for the G locus?
A. 1 only
B. 2 only
C. 3 only
D. 1 and 3 only
E. 1, 2, and 3
- a D
- b A
5 Multiple choice questions
5 True/False questions
assuming that the population was in HWE for the g locus, what percentage of gray moths emerged in 1980 was heterozygous
E. 100% → D
although the seal and the penguin both have streamlines, fish-like bodies with a layer of insulating fat, they arent closely related. this similarity results from
A. convergent evolution
B. adaptive radiation
C. homologous evolution
E. analogous evolution → A
the independent development of similarities between unrelated groups resulting from adaptation to similar environments
A. founder effect
B. kin selection
C. competitive exclusion
D. adaptive radiation
E. convergent evolution → B
A LARGE POPULATION OF LAB AANIMALS HAS BEEN ALLOWED TO BREED RANDOMLY FOR A NUMBER OF GENERATIONS. AFTER SEVERAL GENERATIONS, 49% OF THE ANIMALS DISPLAY A RECESSIVE TRAIT aa THE SAME PERCENTAGE AS AT THE BEGGINING OF THE BREEDING PROGRAM. THE REST OF THE ANIMALS SHOW THE DOMINANT PHENOTYPE, WITH HETEROZYGOTES INDISTINGUISHABLE FROM THE HOMOZYGOUS DOMINANTS.
what proportion of the population is probably heterozygous Aa for this trait?
E. 0.21 → B
which of the following best explains why there are seldom more than five trophic levels in a food chain?
A. most carnivores function at more than one trophic level
B. trophic levels above this number contain too many individuals
C. top carnivores are too few in the number to prey effectively
D. the ecosystem contains too much biomass
E. energy is lost from each trophic level → A