What traits increase fitness in a particular environment?
What will be an ideal response?
adaptations
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People with type A blood have red blood cells that express one type of recognition protein, while those with type B
blood express a different recognition protein. People with AB blood express both recognition proteins. Why can a person with AB blood receive blood from a person with type A, but a person with type A blood cannot received blood from a person with type AB?
What will be an ideal response?DNA Pol III catalyzes the addition of successive nucleotides to the 5' end of a growing polynucleotide
chain. __________________ Indicate whether the statement is true or false.
The development of colon cancer occurs slowly, and colon cancer is more frequently seen in the elderly than the young. This is most likely because
A) cancer cells don't have mitochondria, so they grow slowly. B) usually six or more somatic mutations must occur to give rise to the cancer, which takes time. C) cancer cells have to wait until new blood vessels grow into the area, which takes much time. D) most cancer mutations interfere with mitosis, so cell division occurs more slowly.
The diapsids diverged into the lepidosaurs and the archosaurs. From which of these groups did the snakes arise?
a. archosaurs b. neither of these groups c. lepidosaurs d. There are species of snakes from both of these groups.