The house fly, Musca domestica, has a haploid chromosome number of 6. How many chromatids should be present in a diploid, somatic, metaphase cell?
What will be an ideal response?
24
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What does the graph in the figure above tell you about the definition of a keystone species?
A) A keystone species has little interaction with other species in an environment. B) Removing a keystone species from the community drastically reduces diversity. C) Adding a keystone species to the community will make it more diverse. D) Removing a keystone species from the community will eventually allow for the invasion of a new species.
Root epidermal cells can passively transport ions inward from the soil because they cannot follow a
concentration gradient.
Indicate whether the statement is true or false.What is the most important role of bacteria in the environment?
A) as disease-causing agents B) as fungal control C) as decomposers D) as a source of restriction enzymes
A segment of DNA that codes for a functional product is a(n)
A. genetic code. B. gene. C. codon. D. anticodon.