Ascientist uses materials in her lab to separate dna fragments by size. what
process is she using?

a. use of restriction enzymes

b. polymerase chain reaction (pcr)

c. karyotyping

d. gel electrophoresis

State officials are considering constructing a road through a forested wilderness area. this action will likely affect the forest ecosystem in various ways. part a: predict how the construction of a road could negatively affect plants and animals in that ecosystem. (3 points) part b: describe one way that the construction of a road could have a positive impact of the forest ecosystem. (1 point)

Which of the following types of rock would most likely contain a fossil? slate granite lava rock limestone

How are the reproductive cycles of a fungus and a pteridophyte similar? a)both organisms form fruiting bodies that produce diploid seeds. b)both organisms produce haploid spores and exhibit diploid and haploid stages. c)both organisms reproduce sexually when two haploid hyphae fuse. d)both organisms exhibit a diploid stage and are only able to reproduce asexually.