Why might a point mutation in dna make a difference in the level of a protein's activity? why might a point mutation in dna make a difference in the level of a protein's activity? it might delay the rate of dna replication. it might exchange one stop codon for another stop codon. it might substitute a different amino acid in the active site. it might substitute the n-terminus of the polypeptide for the c-terminus. it might result in a chromosomal translocation?

Turtle hatchling survivorship rate is low in many turtle species due to predation. amanda researched the predatory rate on a species of turtle eggs in the red river. the eggs were harvested from trapped turtles and the egg's cloaca film (reproductive discharge) was either washed off or left on once gathered. research suggests that predators use the female's cloaca scent to locate the eggs. the eggs were only handled when wearing gloves and then reburied along islands where the turtles were trapped. the nests were monitored by cameras and manually on foot and data on nest predation were recorded. a. based on the experimental design, what is the dependent variable? b. based on the experimental design, what is the independent variable? c. based on the experimental design, what is the control?

Explain how ancient whale fossils found in eqypt are believed to support the theory of evolution.

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere,b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify,d)anaerobic bacteria kept thriving with more oxygen