The mechanism of natural selection works, primarily, to change which of the following? The genotypes of individual organisms and their expression

The rate of mutations resulting from external factors

The distribution of traits in a population over time

The likelihood that traits of organisms are passed on

What is the correct trna sequence that would match the following mrna sequence.gcgaua

Asolution of an enzyme and a substrate was placed in a water bath and the temperature of the reaction was raised gradually. the graph shown was plotted at the end of the experiment. what can be concluded from the graph? a) temperature has no effect on the activity of the enzyme. b) the effect of temperature on the enzyme is unpredictable. c) the enzyme shows increased activity up to a certain temperature. d) the activity of the enzyme is inversely proportional to the temperature.

Blood stem cells may develop into any kind of human blood cells. what kind of stem cells are blood stem cells? a. multipotent stem cells o b. totipotent stem cells o c. pluripotent stem cells o d. unipotent stem cells