during replication, this enzyme helps to open up the DNA helix by breaking the hydrogen bonds

centralized iron-containing group that is surrounded by the alpha and beta subunits of hemoglobin

presence of only one allele for a characteristic, as in X-linkage; hemizygosity makes descriptions of dominance and recessiveness irrelevant

internal body cavity seen in arthropods

cavity into which blood is pumped in an open circulatory system

mixture of blood and interstitial fluid that is found in insects and other arthropods as well as most mollusks

grass-like plant noticeable by the absence of woody tissue

grass-like plant noticeable by the absence of woody tissue

animal that consumes a strictly plant diet

consumption of plants by insects and other animals

fraction of population variation that can be attributed to its genetic variance

referring to an animal where both male and female gonads are present in the same individual

state of having both male and female reproductive parts within the same individual

different types of teeth that are modified for different purposes

number of ecological niches