Based on what you know about the principle of parsimony, which of the following is most likely a synapomorphy of conifers and flowering plants?
Given the following cladogram and list of characteristics:
A. Chlorophylls a and b
B. Vascular tissue.
C. Seeds.
D. Flowers.
E. Both chlorophylls a and b and seeds.
C. Seeds.
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You recently discovered a new element, and find that this particular element has one electron its outer energy level. What would you expect will happen to an atom of this element if placed in water?
A. It will gain an electron forming a positive ion. B. It will lose an electron forming a negative ion. C. It will lose an electron forming a positive ion. D. It will gain an electron forming a negative ion.
The ________ (enzymes) link amino acids with their appropriate tRNAs.
Fill in the blank(s) with the appropriate word(s).
Which of the following is not true of an organism's genotype?
A. It contains structural genes that code for proteins. B. It has expressed traits governed by the genes. C. It contains genes that code for RNA. D. It has regulatory genes that control gene expression. E. It is inherited.
Suppose a neuron has a gap in its axon, a region with no voltage gated Na+ or K+ channels. Which statement below is true?
What will be an ideal response?