1. Discuss the evolutionary trends in the genus Homo. Start with the transition
ID: 107588 • Letter: 1
Question
1. Discuss the evolutionary trends in the genus Homo. Start with the transition from early Homo to Homo erectus and end with the Neandertals. Be sure to include the temporal and geographic distributions of the various species of Homo.
2. Discuss the two main hypotheses that have been used to explain the origin and dispersal of modern humans.
3. What is the adaptive value of dark skin tones in equatorial regions such as Africa? What evolutionary pressure caused a lightening of skin tones away from this area?
4.Explain the way a woman’s diet during pregnancy can have an impact on her future child and grandchildren.
Explanation / Answer
(2) .Ans....First we have to discuss the main hypotheses that have been used to explain the origin and dispersal of modern humans because humans,also known as Homo sapiens,are the only hominins left on Earth Prior to our existence other hominins like the Homo erectus,Homo heidelbergensis and even the Neandertals roamed various parts of the world.
The replacement hypothesis suggests that the genes in fully modern humans all came out of Africa as these peoples migrated they replaced all other human populations with little or no interbreeding.
No interbreeding would have occurred because they all belonged to the same species.
(3).Ans...We hvave to know what is the adaptive value of dark skin tones in equatorial regions such as Africa because the Dark skin protects better against UV light.That extra protection isn't needed in colder,darker environments found at higher latitudes.
(4).Ans...Woman’s diet during pregnancy can have an impact on her future child and grandchildren because the Research has linked a woman’s diet before she becomes pregnant to the long-term health of her future child.She eats in the weeks leading up to conception could even affect her child’s risk of contracting illnesses, ranging from flu and HIV to cancer.
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