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MrMuchimi
4 years ago
12

Exfoliation or flaking of rocks due to expansion in extremely high daytime temperatures with contraction in extremely low night

time temperatures is a form of:
a) erosion

b) physical weathering

c) chemical weathering
Biology
1 answer:
Illusion [34]4 years ago
6 0
Physical weathering

The rock chemical composition of the rock was not effect
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Mary marries an unaffected man, justin, whose paternal uncle has galactosemia. determine the genotypes for justin's family.
vitfil [10]
1. Galactosemia is a disease that will only be expressed when a person is<span><span><span> homozygotic recessive for that trait. It's the same as saying it </span> has</span> 2 recessive alleles.

Dominant allele-</span><span> G
recessive allele- g
</span>
Homozygotic dominant:  GG <span><span>(doesn't express the disease)
</span>Heterozygotic : Gg (doesn't express the disease)
Homozygotic recessive: gg (expresses it)</span>

2.
-Mary has this genotype: G_ . This means it can be GG or Gg
-The exercise already says that justin's mother is GG (<span>Homozygotic dominant)
</span>- If his mother is GG, one of these G's is going to be passed to Justin. So, his genotype is either GG or Gg. Since we are not sure we write as: G_.
Justin's genotype: G_

3.
-
Justin's uncle has galactosemia so his genotype is: gg

-
If the uncle was able to receive two recessive alleles it means the mother had one to pass, and so did the father. However, in the diagram, it's not pointed out that they have a disease so it only leaves one possible genotype: Gg. Justin's grandparents are both Gg.

4. The last person to analyze is Justin's father.
If we crossed the grandparents (Gg x Gg) we could obtain these genotypes: GG, Gg, gg.
Justin's father doesn't express the trait, so it's not gg. That leaves us with either GG or Gg. Since we can't know for sure, onece again we write as G_
Justin's father: G_
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----- cells do not directly take part in sexual reproduction, while ---- cells do.
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Answer:

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Explanation:

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Answer:

I think the correct answer is D

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When nuclear fusion begins, what can be said about the internal processes within that star?
Pie

Hi there! Hopefully this helps!

--------------------------------------------------------------------------------------------------------

The answer to your question is the second sentence:

<em> </em><em>Atoms</em><em> in the star </em><em>begin to combine.</em>

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