provide one example of a surfactant commonly used in hospitals?
What will be an ideal response?
benzylkonium chloride
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In wolves, gray coat color (G) is dominant to black (g) and brown eyes (B) are dominant to blue (b). The genes that control these traits are located on different chromosomes. The alpha male of the pack has the dominant phenotype for both traits and is heterozygous for both traits. The alpha female has brown eyes and a black coat; she is heterozygous for eye color. Which option represents gametes
that would be made by the alpha female? A. B, b, and g B. Bg and bg C. Bb and gg D. BG, Bg, bG, bg E. None of these
Four of the following are extraembryonic membranes of the amniote egg. Which one is the exception?
a. albumen b. amnion c. chorion d. allantois e. yolk sac
The Dust Bowl of the 1930s was the result of destruction of ____
a. deserts b. chaparrals c. tallgrass prairies d. short-grass prairies e. temperate deciduous forests
Suppose you have just discovered a Drosophila gene that has a sequence similar to a gene of interest in humans. You need to have mutants of the Drosophila gene because __________
A) you need to see whether fly mutants have a defect in the same system B) you need to see whether the mutant produces the same phenotype C) you need to see whether the Drosophila mutant disrupts the same metabolic pathway D) you want to compare the mutant Drosophila sequence to each mutant human sequence E) you need to have as many alleles in Drosophila as you have found in humans