The circled region of stars denoted by a “B” on the diagram most likely contains __________.

 Improvements in the productivity of labor will tend to:

Which of the star clusters does not contain any protostars?

Use this space to elaborate on any of your answers. You can also leave this blank.

What do the stars in the circled regions “A”, “B”, and “C” all have in common?

Give two features of the luminosity of Type Ia supernovae that makes them useful for determining the distance to distant galaxies. Clearly explain why these features are useful.

In a population of 5000 which has been under Hardy-Weinberg conditions for a number of generations and is known to contain a total of 450 individuals that are homozygous dominant (TT) at a particular locus. What are the gene frequencies?

All of the following are true concerning mating systems except 

If a recessive allele is lethal, and the homozygous recessive individuals die at birth, over time the frequency of the homozygous dominant will

P + H + Q = 1 p + q = 1 P = p2 H =  2pq Q = q2