The fetus is extremely vulnerable to environmental factors that can cause birth defects during the
What will be an ideal response?
First Trimester
Biology & Microbiology
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Which process allows a vertebrate to generate millions of different lymphocytes?
A. DNA rearrangement B. DNA reestablishment C. clonal variability D. instructional variation E. gene cloning
Biology & Microbiology
Natural or man-made substances released into soil, air, or water in greater than natural amounts are called:
a. acids b. pollutants c. nutrients d. metals e. chemicals
Biology & Microbiology
The structure that increases the surface area of the small intestine are the villi and the _______
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
After meiosis, what process restores the chromosome number in diploid individuals?
A. Spermatogenesis B. Transcription C. Fertilization D. Oogenesis E. Gametogenesis
Biology & Microbiology