In the mid-twentieth century, researchers discovered that genes are made of ____________________ and that this molecule is part of cellular structures known as ____________________
Fill in the blank(s) with correct word
DNA, chromosomes
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Metamerism is a characteristic feature of:
A. Annelida B. Arthropoda C. Chordata D. all of the three phyla listed E. none of the three phyla listed
During translation, one mRNA molecule is usually "read" by more than one ribosome at a time so that several proteins can be synthesized at one time.
a. true b. false
On a field study in Costa Rica, you discover a new species of frog! After careful work to determine the size and range of the population, you conclude sadly that the species has very few individuals in an ever-shrinking limited range. The entire species could be wiped out at any time. When you write up your report on the frog, how should you describe its status?
A. Threatened B. Endemic C. Extinct D. Conservative E. Endangered
What is the second of the two names in an organism's scientific name?
A) Species B) Genus C) Kingdom D) Order E) Family