Answer:
e. binds to an inducer to activate it.
Explanation:
An active repressor binds to the operator (operon) to either block or start transcription. Some of these proteins are needed routinely, while others are needed only under certain circumstances. For instance, lactose in the lac operon will turn the gene off if the active repressor protein binds to it.
<span>The question is providing us with the following scenario:The frog population in the Amazon basin varied. Every 500 years, there was a mutational change leading to speciation. In between, the population remained the same with no observable changes. This pattern of microevolution is called punctuated equilibrium. This pattern is distingushed by long periods of lack of change, followed by a sudden and often extreme change, and followed again by a period of a lack of change. </span>
Answer:
the variability in neuroticism is due partly to genetic variability in the population.
Explanation:
In population genetics, heritability (h) is defined as the amount of the phenotypic variation attributable to genetic factors rather than environmental factors.
Mathematically, h is calculated by using the following equation: H2 = Vg/Vp, where Vg is the variation in genotype, while Vp is the variation in phenotype.
An H value close to zero (0) indicates a very low heritability (i.e., the phenotype depends on the environmental differences between individuals), while an H close to one (1) indicates very high heritability (i.e., the phenotype is firstly dependent on genetic factors).
<span>Waste products such as poop, diarrhea, and carbon dioxide (look in the respiratory system) must be removed. If they are allowed to accumulate they cause poisoning which slows down vital chemical reactions. Which can cause many problems to develop.</span><span />
Answer:
The simplest virions consist of two basic components: nucleic acid (single- or double-stranded RNA or DNA) and a protein coat, the capsid, which functions as a shell to protect the viral genome from nucleases and which during infection attaches the virion to specific receptors exposed on the prospective host cell.
