When the population mean for a given measured trait is observed to decline over the course of several generations, it is an example of disruptive selection
Indicate whether the statement is true or false
FALSE
Explanation: A positive or negative change in the population mean value-i.e., in one or the other direction-is defined as directional selection.
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Lateral gene transfer is one plausible explanation as to why organisms in Archaea, Bacteria, and Eukarya still share so many genes among such distinct domains
Indicate whether the statement is true or false.
When Rebecca Cann decided to research on the evolution of humans, she chose to study mitochondrial DNA. Which of the following explains why she chose this type of DNA?
A. because mitochondrial DNA is more abundant and therefore easier to extract B. because mitochondrial DNA is recombined from generation to generation and offers a look at the lineage of the human population C. because mitochondrial DNA is circular D. because mitochondrial DNA lasts longer in the tissues
Metabolic rate can be measured indirectly by measuring consumption of what substance?
A. water B. carbon dioxide C. oxygen D. insulin E. None of these answers are correct.
The condition of having no sperm in the semen is called ____________________. Fill in the blank(s) with the appropriate word(s)