Graded assignment
laboratory: rocks and minerals
purpose: the purpose of this lab is to identily 4 unknown mineral samples by observing the color luster streak
and hardness
directions: use the pictures of each unknown mineral to fill out the table in part a then compare your table to
the data table in part b to identify the 4 unknown minerals last answer some analysis questions in part c
parta: observation
for each picture of a mineral write down your observations in the data table below use only the terms provided
in the example row to fill out the data table
unknown #1
racordo
vations about the color and lustrothe minerals. then
at the treak and observe whether or not the mineral scratched plass
the
unknown mineral al
scratch test
unknown #2
scratch test
unknown mineral 2
stresk test

Which of the following scenarios is an example of the bottleneck effect? answers a in south africa, much of the afrikaner population is descended from a small number of dutch colonists. in this population, this is an unusually high frequency of pseudoxanthoma elasticum (pxe), an elastic tissue disorder. b four white-tailed deer are introduced to a park in finland. thirty years after their introduction scientists compare the genes in the population and find that there is no variation. c during the industrial revolution, london's air became filled with soot. as a result, birds started eating more of the lighter moths because they were easier to spot than their darker counterparts. over time, the moth population changed so that there were more darker moths than lighter ones. d 10% of the population of american alligators in an area have the recessive trait albinism. a massive flood results in the death of 80% of the population. of the remaining population, 60% have the recessive trait of albinism.

Duchenne muscular dystrophy is a serious condition caused by a recessive allele of a gene on the human x chromosome. the patients have muscles that weaken over time because they have absent or decreased dystrophin, a muscle protein. they rarely live past their twenties. how likely is it for a woman to have this condition? a) women can never have this condition. b) one-fourth of the daughters of an affected man would have this condition. c) one-half of the daughters of an affected father and a carrier mother could have this condition. d) only if a woman is xxx could she have this condition.

What changes the stability of the element