If similarities between two structures in different organisms reflect common ancestry, these structures are
A. Vestigial
B. Analogous
C. Homeotic
D. Heterozygous
E. Homologous
E. Homologus
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Which of the following molecules act as building blocks (monomers) of polypeptides?
A) 1, 4, and 6 B) 2, 7, and 8 C) 7, 8, and 13 D) 11, 12, and 13 E) 12, 13, and 15
Carbon dioxide is the most abundant greenhouse gas in the atmosphere. What is its current concentration?
A. 1.5 ppm B. 1.75 ppm C. 385 ppm D. 560 ppm E. 700 ppm
Which statement about SNPs in the human genome is true?
A) Most SNPs have an effect on phenotype. B) Any two human genome copies will have on average 3 million single nucleotide polymorphisms. C) SNPs refer only to deletions or insertions, not base substitutions. D) Most SNPs are located in the introns of genes, and thus effect phenotype.
Photosynthesis occurs in _______.
a. plants b. bacteria c. protists d. all of these