Although Charles Darwin's concept of natural selection was partially based on the observation of variability within a species, Darwin did not develop an acceptable mechanism to explain this variability. How did the work of Gregor Mendel help explain a mechanism of biological evolution?
What will be an ideal response?
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A manifestation of sickle-cell anemia is the abnormal hemoglobin S reduces the ability of red blood cells to transport oxygen throughout the body
Indicate whether the statement is true or false
A single mother and her son, living together, would be an example of a(n) __________ family
A) independent B) extended C) nuclear D) solitary
Lemurs and lorises are placed in the suborder Strepsirhini
Indicate whether the statement is true or false
The Basseri and the Qashqai
A. were nomadic foraging groups in Iran. B. differ in authority structure, with the Qashqai featuring a more complex and hierarchical structure than the Basseri. C. differ in leadership because a Basseri "big man" (tonowi) could enforce his decisions, whereas the Qashqai village head could only lead by example. D. enjoyed a symbiotic relationship between the Basseri, who were nomadic pastoralists, and the Qashqai, who were horticulturalists. E. were two of the age sets in Melanesian society.