From what is a karyotype made?
a. a Punnett square
b. a series of X-ray diffraction images
c. a preparation of gametes on a microscope slide
d. a photograph of cells in mitosis
Ans: d. a photograph of cells in mitosis
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Describe how you have applied or could apply the scientific method to an everyday problem.
What will be an ideal response?
During root nodule development rhizobia penetrate into root cortex cells. Next, proteins called __________ cause root cortex cells to divide, forming nodules.
A. Nod factors B. Flavonoids C. Nodulins D. Leghemoglobin E. Bacteroids
Multigene families arise from _____
a. a single gene duplication event b. repeated cycles of gene duplication followed by mutation
c. single point mutations d. exon shuffling e. deletions of genes
Before Darwin
a. no one had conceived of biological evolution b. Lamarck wrote about biological evolution, but had the mechanism wrong. c. Malthus developed a theory of evolution. d. Lamarck had the idea of natural selection, but was ignored. e. Malthus demonstrated the progression of fossils in the rocks.