How would you explain the class results for moth color?
What would be an ideal response?
Science is curious about why coloration can differ among moth species. Scientists want to explain class change should look at mutation, changing World and natural selection to understand how and why moth species color change over time.
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H. V. Wilson worked with sponges to gain some insight into exactly what was responsible for holding adjacent cells together. He exposed two species of differently pigmented sponges to a chemical that disrupted the cell-cell interaction (cell junctions)
, and the cells of the sponges dissociated. Wilson then mixed the cells of the two species and removed the chemical that caused the cells to dissociate. Wilson found that the sponges reassembled into two separate species. The cells from one species did not interact or form associations with the cells of the other species. How do you explain the results of Wilson's experiments? A) The two species of sponge had different enzymes that functioned in the reassembly process. B) The molecules responsible for cell-cell adhesion (cell junctions) were irreversibly destroyed during the experiment. C) The molecules responsible for cell-cell adhesion (cell junctions) differed between the two species of sponge. D) One cell functioned as the nucleus for each organism, thereby attracting only cells of the same pigment.
The Baltimore classification scheme is a useful way to categorize viruses based on their host infectivity
Indicate whether the statement is true or false.
A Punnett square is used to determine
(a) probable gamete genotypes. (b) possible parental phenotypes. (c) possible parental genotypes. (d) possible genetic outcomes of a cross.
A scientist studying the sequence of nucleotides in the rRNA of a bacterial species is working on
A. nomenclature. B. determining evolutionary relatedness. C. recombinant DNA. D. determining if that species is the cause of a new disease. E. bioremediation.