In in-vitro fertilization, sperm are placed in the vagina of a woman by a physician.
Answer the following statement true (T) or false (F)
False
In in-vitro fertilization, the union of sperm and egg to form a zygote occurs in laboratory glassware. The embryos are then transferred to a woman's uterus. In artificial insemination, sperm are placed in the vagina of a woman by a physician.
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Most Swiss starlings produce four to five eggs in each clutch. Starlings producing fewer or more than this have reduced fitness. Which of the following terms best describes this situation?
A) artificial selection B) directional selection C) stabilizing selection D) disruptive selection E) sexual selection
Describe at least 3 adaptations of modern whales adapted for a completely aquatic existence
What will be an ideal response?
What tissue in vascular plants would be used to move sugars from roots to the stems and leaves, and
from leaves to roots and stems?
a. sclerenchyma b. phloem c. collenchyma d. parenchyma e. xylem
Burkholderia was reclassified from the gammaproteobacteria to the betaproteobacteria because
A) it grows in disinfectants. B) it is a gram-negative rod. C) it causes infections in cystic fibrosis patients. D) it causes melioidosis. E) its rRNA sequence is similar to that of Neisseria.