In cows, certain coat colors are co-dominant
For example red is dominant; white is
recessive; roan (red and white) is co-dominant.
If a roan bull is crossed with a white cow what
will be the expected coat colors of the calves?
a. all roan
b. half roan and half white
c. half red and half white
d. 3/4 roan and 1/4 white
e. 1/2 roan, 1/4 red, 1/4 white
B
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Describe why many vent animals that house chemosynthetic bacteria are not harmed by the sulfide compounds in their blood, which normally would be toxic to these animals
What will be an ideal response?
Body parts that are similar in different lineages because the lineages have a common ancestor are ____
a. homologous structures b. comparative structures c. analogous structures d. repetitive structures e. vestigial structures
Which of the following is not a growth factor for various microbes?
a. cholesterol b. water c. vitamins d. heme
Many drugs that inhibit the synthesis of the cell wall act by
A. preventing the cross-linkage of NAM subunits. B. blocking the secretion of cell wall molecules from the cytoplasm. C. preventing the formation of alanine-alanine bridges. D. disrupting the formation of the mycolic acid layer of the cell wall. E. preventing the formation of ?-lactamases.