Convergent evolution resulted in placental and marsupial mammals with similar structural features. Indicate whether the statement is true or false
True
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Dennis had a history of heart disease in his family and was reducing his intake of saturated fats. Saturated means each carbon atom is bonded to as many hydrogen atoms as it can accept. If a carbon were bonded to two carbons, how many hydrogens could it accept?
A. 0 B. 1 C. 2 D. 3 E. 4
The carcinogenic compound ____, which damages kidneys and the nervous system, is produced by some strains of Aspergillus flavus.
Fill in the blank(s) with the appropriate word(s).
The Hayflick limit describes ____
a. the size limit to which a cell can grow b. the number of divisions a cultured cell can undergo c. the largest number of chromosomes an organism can possess d. the most cells an organism can have e. how rapidly DNA replication can occur
the x and y chromosomes are referred to as
What will be an ideal response?