Heredity and Evolution
According to fossil discovered up to present time, the origin and evolution of man started from:
France
Java
Africa
China
Africa
According to fossils discovered up to present time, the origin and evolution of man started from Africa. Regardless of where we have lived for the past few thousand years, we all come from Africa. The earliest members of the human species, Homo sapiens, can be traced there. Even our genetic footprints can be traced back to our African roots. According to various models and theories,modern humans originated in Africa and started to disperse through the world roughly 50,000 to 100,000 years ago. Such theories are based on the human fossil timeline records.
Africa According to fossils discovered up to present time, the origin and evolution of man started from Africa. Regardless of where we have lived for the past few thousand years, we all come from Africa. The earliest members of the human species, Homo sapiens, can be traced there. Even our genetic footprints can be traced back to our African roots. According to various models and theories,modern humans originated in Africa and started to disperse through the world roughly 50,000 to 100,000 years ago. Such theories are based on the human fossil timeline records.
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Human cells have ______ pair(s) of autosomes.A. 23
B. 2
C. 22
D. 1
Human baby will be a male if its 23rd chromosome pair is:
A. XX
B. XY
C. X
D. XXX
The evolution of vegetable broccoli belonging to the cabbage family is an example of:
A. natural selection
B. artificial selection
C. elimination
D. speciation
The figure below depicts a situation where a rare variation has become common. The green coloured beetle population has become common because it gave them a survival advantage. This is an example of:
A. Artificial selection
B. Natural selection
C. Accidental selection
D. Random selection
In evolutionary terms, we have more in common with a:
A. monkey
B. rat
C. chimpanzee
D. gorilla
The preserved traces of living organisms are known as:
A. Humus
B. Crust
C. Skeleton
D. Fossils
Speciation may take place when _______ is/are combined with geographical isolation.
A. variations
B. genetic engineering
C. cloning
D. duplication
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