Polydactyly (having six fingers per hand) is a hereditary condition caused by a dominant gene. The rarity with which this condition is seen in human populations is probably because persons with polydactyly are infertile the allele for polydactyly is rare the trait is lethal the trait makes people undesirable mates The use of antibiotics over the last sixty-five years has resulted in a drastic increase in populations of bacteria that are resistant to many antibiotics. The most probable cause of this change in bacterial populations is that ? sanitary conditions have declined over the last sixty-five years. ? antibiotics select for bacteria that have a degree of resistance, and against those that don't. ? the bacteria needed to develop resistance to antibiotics in order to survive. ? genetic engineering has released "super bugs" that cannot be killed by antibiotics. Answers Species/ populations/ allele frequencies F Adaptation G Population B Speciation A Amino acid, DNA H Homologous I Individuals D Evolve, accommodate, acclimate E Hip/leg J Descent, modification C Microevolution E Gradualism D Alleles/ genetics A Sexual selection/non-random mating B Gene flow B Stability D Extinction B Adaptations B Reproductive isolation B Genetics/alleles C Convergent evolution A Accommodation B Acclimation D Temporal C Temporal C Behavioral D
Polydactyly (having six fingers per hand) is a hereditary condition caused by a dominant gene. The rarity with which this condition is seen in human populations is probably because persons with polydactyly are infertile the allele for polydactyly is rare the trait is lethal the trait makes people undesirable mates The use of antibiotics over the last sixty-five years has resulted in a drastic increase in populations of bacteria that are resistant to many antibiotics. The most probable cause of this change in bacterial populations is that ? sanitary conditions have declined over the last sixty-five years. ? antibiotics select for bacteria that have a degree of resistance, and against those that don't. ? the bacteria needed to develop resistance to antibiotics in order to survive. ? genetic engineering has released "super bugs" that cannot be killed by antibiotics. Answers Species/ populations/ allele frequencies Adaptation Population Speciation Amino acid, DNA Homologous Individuals Evolve, accommodate, acclimate Hip/leg Descent, modification Microevolution Gradualism Alleles/ genetics Sexual selection/non-random mating Gene flow Stability Extinction Adaptations Reproductive isolation Genetics/alleles Convergent evolution Accommodation Acclimation Temporal Temporal Behavioral F G B A H I D E J C E D A B B D B B B C A B D C C D
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