Which of the following best describes the effect of a greater number of cysteine amino acids on the stability of the proteins? А The change has no effect on the stability of the protein because only one type of amino acid is involved.
B. The change leads to increased protein stability because of an increased number of S-S bonds in the tertiary structure of the proteins.
С The change leads to decreased protein stability because of an increased number of S-S bonds in the tertiary structure of the proteins.
D The change leads to increased protein stability only when the added cysteine amino acids are next to other cysteine amino acids in the primary structure.

If vegetable oil is made out of veggies, then what is baby oil made out of?

Archeologists have discovered three sites showing conclusive evidence for the mastery of fire in tanzania, from a period slightly after the time that homo habilis was present in africa. these sites clearly were founded by homo erectus, the descendent species of homo habilis that migrated north, out of africa and into asia. homo erectus was known to have mastered fire, from ample evidence at sites in asia. there is no reason to attribute mastery of fire to homo ergaster, the descendent species of homo habilis that remained in africa. which of the following is an assumption on which the argument depends? (a) before their migration, homo erectus occupied african territory as far south as tanzania.(b) the strain of migration provided the selective pressure motivating homo erectus‘ mastery of fire.(c) homo ergaster would not have derived as much benefit from the mastery of fire as did homo erectus.(d) homo ergaster inherited all cultural knowledge from homo habilis, a species that did not have mastery of fire.(e) homo ergaster did not occupy regions as far south as tanzania until well after the time of these three sites.

Which correctly describes crossing over ?