Genetic evidence has revealed that H. sapiens diverged from _____________________ 100,000 years ago, while

Neanderthals diverged from this species 300,000 years ago, suggesting that modern humans did not descend directly from
Neanderthals. Fill in the blank(s) with the appropriate word(s).


H. heidelbergensis

Biology & Microbiology

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Which of the following is not true regarding the history of life on Earth?

A. The history of planet Earth includes alternations between colder periods ("icehouses") and warmer periods ("greenhouses") on the surface of the planet. B. The rise of more complex organisms such as eukaryotes has resulted in a reduction in diversity of more "primitive" organisms such as bacteria. C. There have been repeated incidents of mass extinction in the history of the planet in which species diversity has been reduced by 50% or more.

Biology & Microbiology

A permanent, inheritable change in the genetic information is called ________.

A. an alteration B. translation C. a mutation D. regeneration E. transcription

Biology & Microbiology

Which of the following is referred to as a hollow ball of cells?

a. cleavage b. egg c. gastrula d. zygote e. blastula

Biology & Microbiology

bolus

What will be an ideal response?

Biology & Microbiology