Biology, 22.11.2021 23:10 juliocesar61
Crime-scene work often involves obtaining a DNA sample from a drop of blood to help identify persons who may have been involved. Frequently, the size of the DNA sample is extremely small, too small for easy analysis. Which of the following laboratory procedures could criminologists use to amplify the amount of DNA present?
a
Cloning and gel electrophoresis
b
Cloning and polymerase chain reaction (PCR)
c
DNA splicing and polymerase chain reaction (PCR)
d
Vector amplification and DNA splicing
Answers: 1
Biology, 21.06.2019 17:30, 365371
Charles darwin published his theory of evolution in 1859. in what way foes modern evolutionary theory differ from the theory as proposed by darwin? a) darwin inferred that individuals can evolve, but modern generic science has shown that this is not true. b)darwin inferred that individuals do not evolve, but modern genetic science has shown that this is not true. c)modern science has disproved most of darwin's original theory of evolution, because darwin knew nothing about generations and their role in heredity. d)generic studies have shown that gene expression and other factors operate along with natural selection, but most of darwin's theory has been supported by modern science.
Answers: 1
Biology, 21.06.2019 18:00, staxmillz
What evidence did mendel find that supported his law of independent assortment? a. dominant traits are expressed when there is a dominant allele. b. traits do not affect the inheritance of other traits. c. some traits have three or four different alleles. d. plants and animals can both reproduce sexually.
Answers: 3
Biology, 21.06.2019 23:00, cancerbaby209
What are tissues? a groups of tissues that work together b basic units of structure and function c groups of cells that perform the same function d multiple organs that perform a major function
Answers: 2
Biology, 22.06.2019 00:50, ellaemtagedeane
How does deforestation affect the water cycle? a. it increases the amount of runoff b. it increases the amount of percolation c. it increases the amount of transpiration d. it increases the amount of precipitationa it increases the amount of runoff
Answers: 1
Crime-scene work often involves obtaining a DNA sample from a drop of blood to help identify persons...
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