The comparison between the number of human genes and those of other animal species has led to many conclusions, including that _____
A) the density of the human genome is far higher than in most other animals
B) the number of proteins expressed by the human genome is far more than the number of its genes
C) most human DNA consists of genes for protein, tRNA, rRNA, and miRNA
D) the genomes of most other organisms are significantly smaller than the human genome
B
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About how many quarts of blood does an average
human have? a. 3 b. 4 c. 5 d. 6 e. 7
Which of the following conditions would most likely be due to high blood pressure in a mammal?
A) bursting of blood vessels in capillary beds B) inability of the right ventricle to contract C) reversal of normal blood flow direction in arteries D) destruction of red blood cells
Suppose you traveled back in time and located the first animals to have evolved feathers. You found that these animals were tree-dwelling ectotherms, able to run quickly but unable to fly. You also noticed that only males had feathers
Which hypothesis of feather evolution would these data most support? Feathers initially evolved in a role associated with _____. A) flight B) insulation C) sexual selection D) gliding
The partitions that separate the segments of the annelid body are known as
A. setae. B. pseudocoels. C. radula. D. septa. E. nephridia.