The process by which the presence and activity of neighboring cells determine an aspect of development is called ________
Fill in the blank(s) with correct word
induction
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Which event is geologically the oldest?
a. evolution of vascular plants b. evolution of modern humans c. oxygen accumulation in the Earth's atmosphere d. evolution of prokaryotes e. evolution of reptiles
What is the correct order of geological time
frames from oldest to most recent?
a. Cambrian ? Silurian ? Permian ? Cretaceous b. Cambrian ? Permian ? Silurian ? Cretaceous c. Cretaceous ? Silurian ? Permian ? Cambrian d. Cretaceous ? Permian ? Silurian ? Cambrian e. Permian ? Cretaceous ? Cambrian ? Silurian
The number of chromosome pairs in a species:
a) is always 23. b) is greatest among insects. c) is always greater than three. d) increases with intelligence. e) None of the above are true.
How do prokaryotic and eukaryotic chromosomes differ?
A) Eukaryotic chromosomes occur singly, and prokaryotic chromosomes occur as pairs. B) Genetic information is stored as DNA in eukaryotic cells and as proteins in prokaryotic cells. C) Prokaryotic chromosomes are not made from nucleotides. D) Prokaryotic chromosomes are not contained in a membrane-bound organelle.