Treatment Resistant STI Quiz 2

A   Humans have provided the selection pressure that results in more harmful strains of bacteria. 

B   Resistance alleles in the bacterial populations in the human body are in Hardy-Weinberg equilibrium.

C   It takes decades or longer for organisms to evolve by natural selection.

D   Bacteria can mutate in order to be immune to antibiotics.

E   Bacteria are becoming resistant to antibiotics much more slowly than humans can invent new antibiotics.

A   not a heritable trait.

B   subject to directional selection.

C   subject to stabilizing selection. 

D   subject to disruptive selection.

E   a strong predictor of adult weight.

A   The similarities are probably due to random chance.

B   The basic shapes of fish, penguins, and dolphins are vestigial structures.

C   Fish, penguins, and dolphins all faced the same physical constraints during their evolution and converged upon the same body plan. 

D   Divergent evolution and adaptive radiation into new niches often result in convergent evolution.

E   Parallel evolution is common among aquatic mammals.

A   very similar DNA 

B   none of these, their is no relationship between DNA and relatedness

C   very different DNA

D   very different proteins

A   that are acquired in an individual’s lifetime.

B   that confer a reproductive advantage.

C   that are heritable. 

D   that reduce mortality.

E   that are adaptive.

A   uniformity.

B   organisms that are perfectly adapted to their environments

C   more intricate adaptations.

D   organisms that are stronger.

E   None of the above is correct. 

A  Migration of individuals into a population generally decreases the genetic variability within a population.

B  Migration of individuals into a population generally causes no change in the genetic variability within a population because it is a case of artificial selection.

C  Migration of individuals into a population generally causes that population to diverge to the extent that it becomes a new species.

D  Migration of individuals into a population generally increases the genetic variability within a population.

E  Only choices a) and c) are correct.

A   it must be in an unstable environment.

B   individuals must be migrating in and out of the population.

C   the mutation rate must be low.

D   it must have a small population size.

E   its members must possess inheritable variation. 

A   STIs are annoying and uncomfortable but they are never fatal.

B   Genital herpes can be treated and cured with antibiotics.

C   Nearly all STIs have severe and obvious ongoing symptoms.

D   STIs can be transmitted through the mouth or the anus.

E   STIs can only be transmitted through sexual intercourse. 

A   none of these is correct

B   sperm; menstruation

C   sperm; ovulation

D   testosterone; menstruation

E   testosterone; ovulation 

A   uterus; oviduct

B   vagina; oviduct 

C   cervix; uterus

D   uterus; ovary

E   vagina; uterus

A   urethra

B   prostate 

C   seminal vesicles 

D   bulbourethral glands 

E   epididymis

A   blastulation 

B   fertilization

C   gastrulation

D   organogenesis

A   None – all of these are advantages.

B   The offspring are better suited to survival in a changing environment.

C   The offspring of sexual reproduction are genetically different.

D   Finding a mate can consume lots of energy and time.