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Alona [7]
2 years ago
12

Which radioactive isotope would you use to date a 4-billion-year-old piece of granite?

Biology
1 answer:
schepotkina [342]2 years ago
3 0

Explanation:

Uranium- 238 - lead 206 dating

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The PCR primer ‘D7S820’ is used to amplify the D7S820 locus. Using this gel below, determine whether each person (M1, P1, P2, C1
Ahat [919]

Answer:

1) M1 is heterozygous since it contains 2 bands, which means that it contains one recessive and one dominant allele

P1 is homozygous for this locus, since it contains a single band or is known to be homozygous for the locus or gene.

P2 is hetozygous for this locus because two bands appear in which each band represents one allele for the gene.

ChildC contains two gel bands, representing two alleles and is therefore heterozygous

P1 is the father of the child C1, if we look at the gel, each father shows a similar band, one coinciding with the mother and the second with the father p1

As for the paternity study, the PCR test is not useful, since it provides asymmetric results, thus only one strand information will be provided, and because the DNA is double-stranded, a more complete study is required.:

3 0
3 years ago
Its Multiple Answers!!!
viva [34]
The answer to this is C.
8 0
3 years ago
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In the history of astronomy, which of the following is true?
Naya [18.7K]

Answer:

Johannes Kepler was a student of Tycho Brahe.

Explanation:

Johannes Kepler joined the wealthy astronomer Tycho Brahe as a student as assistant. After the death of Brahe, Kepler used his observations data and based on it formulated the three laws of planetary motion. Galileo described the heliocentric model with planets revolving about the Sun in circular orbits which was corrected by Kepler. He corrected that the orbits are elliptical.

Ptolemy believed in geocentric model, according to which Earth is at the center of the universe. Galileo did not built observatory. Issac Newton believed in heliocentric model of the universe.

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3 years ago
How are vital functions such as growth, responsiveness, reproduction, and movement dependent on metabolism?
ycow [4]

Answer:

e

Explanation:

8 0
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How do invasive species spread? Identify three methods.
DaniilM [7]
1-no predators,so uncontrolled population growth

2-is a predator that is stronger than the apex predator of the area,or is in a predator free environment so has little to no problem spreading

3-is a toxic animal that breeds quickly,so when eaten can kill what ate it,there for ruining the ecosystem as the predators die from the toxic prey they eat.which can lead to method 1 if not dealt with.
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3 years ago
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