In order to identify genes that function together in genetic pathways researchers can perform modifier screens, looking for second site enhancers or suppressors of a mutant. which of the following is the most reasonable strategy for carrying out a suppressor screen in particular?

a. analyze the dna sequence near the mutation of interest, looking for sequences that may act as silencers
b. identify mutations that, when crossed with the original mutant, result in synthetic lethality
c. mutagenize the original mutant and look for new mutations that reduce the severity of the original mutant phenotype
d. screen for enhancer-trap strains that show gene expression differences in the original mutant
e. isolate mutants with phenotypes similar to the original mutant phenotype and then cross the mutants to identify the affected gene(s)

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.  

i'm guessing this is from edg enuity so the answers would be, from top to bottom,

theodor schwann

matthias schleiden

robert hooke

rudolph virchow

anton van leeuwenhoek

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.

yeytyryyeyeyeyeyeeyeyey6