All the different molecular forms of the same gene are called ________.

If a mother has type O blood, which of the following blood types could NOT be present in her children?

 The phylum name Platyhelminthes is derived from two Greek words meaning

Which factor would be involved in density-independent population growth?

All the genes located on a given chromosome compose a ________.

What is the expected phenotypic ratio resulting from a homozygous recessive X heterozygous cross?                      

In an experiment, the researcher is trying to examine the effects of artificial sweeteners on the germination of radish seeds.  She gives the plants in Group A sugar.  Plants in Group B receive NutraSweet.  Plants in Group C get Sweet & Low.  She finds that those in Group A have the longest roots after two weeks.  There is also a group D.  What is the dependent variable?

A somatic cell with two of each type of chromosome characteristic of the species has a (n) _____ chromosome number.

Species fit along a continuum of r- and K-selection; not all species show purely r traits or purely K traits. For example, sparrows produce several young per year but only live a few years, while the wandering albatross first reproduces at age 10 and then produces a single egg every other year during its 40-year life span. Compared to the albatross, the sparrow is more

Name the four subregions of the ancient Near East.