BIO211H5 Study Guide - Final Guide: Radiocarbon Dating, Schist, North American Plate

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viridiancockroach622

18 May 2012

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Document Summary

Origin of earth o o o: mantle (40-2890 km) o o crust (0-40 km) liquid iron core (2890-5150 km) solid iron core (5150-6370 km) Meteorite impacts increased concentrations of some elements in upper earth. Mafic: high in magnesium and iron oceanic crust: denser and heaver, more mafic continental: lighter, less dense, felsic oldest rocks on earth are small archean fragments high heat flow limited continental thickness zircon crystals: 4. 1-4. 2 billion years old. 2 continental collide: mountains o o o o. Mohorovicic: boundary between the mantle and the crust. 40-0km deep (0 at volcanoes) continental: thicker, less dense oceanic: thinner, more dense together with the uppermost mantle, makes up the lithosphere. Earth is an archive geologic record archives earth"s history results from the interaction of complex systems within the planet the lithosphere (specifically the sedimentary rocks of the crust) contains the record of life on earth.

Related Questions

The following questions refer to this information: In the year2500, five male space colonists and five female space colonistsfrom Earth settle on an uninhabited Earthlike planet in theAndromeda galaxy. The colonists and their offspring randomly matefor generations. All ten of the original colonists had free earlobes, and two are heterozygous for that trait. The allele for freeear lobes is dominant to the allele for attached ear lobes.

If one assumes that Hardy-Weinberg equilibrium applies to thepopulation of colonists on this planet, about how many people willhave attached ear lobes when the planet's population reaches10,000?

		10,000
		1,000
		800
		400
		0

goldwhale242

The following questions refer to this information: In the year2500, five male space colonists and five female space colonistsfrom Earth settle on an uninhabited Earthlike planet in theAndromeda galaxy. The colonists and their offspring randomly matefor generations. All ten of the original colonists had free earlobes, and two are heterozygous for that trait. The allele for freeear lobes is dominant to the allele for attached ear lobes.
If four of the original colonists died before they producedoffspring, the ratios of genotypes could be quite different in thesubsequent generations. This is an example of?

1)diploidy

2)gene flow

3)genetic drift

4)diversifying selection