Major nerve tracts are formed. 

 Choose the letter of the best match:
A. third trimester of pregnancy
B. second month of pregnancy
C. first month of pregnancy
D. second trimester of pregnancy
E. third month of pregnancy


A. third trimester of pregnancy

Biology & Microbiology

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What basal transcription factor is a helicase?

A. TFIID B. TFIIH C. TFIIF D. TFIIB

Biology & Microbiology

Bilateria are characterized by

A. a plane of symmetry that forms mirror images around a vertical plane in the midline. B. a plane of symmetry that forms mirror images around a horizontal plane in the midline. C. a plane of symmetry around a transverse plane across the center of the body so that the front and back halves are mirror images. D. a plane of symmetry that forms mirror images around an oblique plane in the midline. E. a plane of symmetry that forms mirror images around any plane through the longitudinal midline of the body.

Biology & Microbiology

Amphibians can accomplish gas exchange using ____

a. gills only b. lungs only c. respiration through the skin only d. both gills and lungs e. gills, lungs, and respiration through the skin

Biology & Microbiology

Which of the following statements is false?

a. A female has more oocytes before she is born than at any time during her life. b. Meiosis II will not occur in an oocyte unless it is fertilized. c. Fertilization occurs in the vagina. d. Implantation occurs in the uterus. e. The vagina serves as the birth canal.

Biology & Microbiology