The interlocking rib cage of Tiktaalik roseae suggests that this transitional organism had lungs. What other traits were found in T. roseae, but not in its ancestral form?
A. Live young and fins.
B. An upright stance.
C. Primitive wrist and finger-like bones.
D. Articulating hip bones.
E. Wings and scales.
Answer: C
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Depurination is a type of mutation where a purine base is lost, but the DNA backbone remains intact. Which of the following are likely to occur as a result of depurination?
A. An incorrect base can be incorporated in the next round of replication. B. A deletion will occur, and there will be an overall loss of a base to the DNA strand. C. Repair enzymes will recognize the error and replace the defective nucleotide. D. All of the above are correct. E. Both a and c are correct.
The __________ generation is dominant in mosses, as it can live independently
a. haploid sporophyte b. haploid gametophyte c. diploid sporophyte d. diploid gametophyte e. triploid sporophyte
In genetics, map units express the distance between:a
chromosomes during metaphase. b. two loci on a chromosome. c. alleles. d. polar bodies. e. homologous chromosomes.
Testosterone is produced by the ________ and the adrenal cortex
Fill in the blank(s) with correct word