Fisher's sex ratio model was put to test in a species of blue moon butterflies on the Samoan islands of Upolu and Savaii, where which of the following conditions existed?
a. The male:female sex ratio was the expected 1:1.
b. 99% of the butterflies were female and only 1% were male.
c. Only the males were infected with the Wolbachia bacterium.
d. A and C.
B
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Which of the following genera is photosynthetic using bacteriochlorophyll g?
A. Heliobacterium B. Clostridium C. Veillonella D. Caryophanon
A diploid cell with three pairs of chromosomes has the genotype Aa Bb Cc, where each gene is on a different chromosome. If this cell were to undergo meiotic division, how many genetically different types of gametes could be produced?
A) 1 B) 3 C) 6 D) 8 E) 9
Answer the following statements true (T) or false (F)
1. G proteins and Ras are activated when bound to guanosine diphosphate. 2. One common feature with G-protein coupled, enzyme-linked, and growth factor receptors is that their activation leads to activation of protein kinases. 3. Cyclic AMP activates protein kinase C in producing a cell response. 4. If IP3 binds a Ca2+ ligand-gated ion channel in the endoplasmic reticulum then cytosolic Ca2+ levels will rise in the cell.
Which of the following animals does NOT
have an endoskelton?
a. sea stars b. snakes c. frogs d. oysters e. all of these animals have an endoskeleton