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strojnjashka [21]
3 years ago
10

The soft parts of dead plants and animals do not often become fossils becuase they decompose rapidly. List three substances that

might prevent decay
Biology
1 answer:
ikadub [295]3 years ago
6 0
There are some things that can prevent decay, one if them is ice, an example of that is a frozen mammoth, ice can prevent the body from decaying, another thing is amber, it can trap an insect and prevent it from decaying, lastly there is tar, a substance that covers thing in a black substance that prevents it from decaying.
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Plate tectonics may affect organic evolution because movement of plates may cause a change in ____.
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Answer:

The correct answer would be b.  the environment.

Due to movement of tectonic plates the organisms would experience different environment. For example, different habitat, different food source et cetera.

As an adaptation to the changing environment different organisms would evolve in different species.

For example, in Galapagos island fiches had developed different sizes and shapes of beaks as a result of adaptation towards different environment.

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3 years ago
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Name the enzyme that catalyzes the reaction that converts fibrinogen to fibrin.
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If an organism expresses a recessive phenotype, can you tell the genotype? Explain your answer by giving an example.
blondinia [14]
Yes can you tell the genotype because obviously if you can tell the genotype then there you go
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A plastic rod becomes negatively charged when it is rubbed with a piece of wool. how does the rob become charged?
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3 years ago
In humans, the allele for dimples (D) is dominant to the allele for no dimples (d). At another gene locus, the allele for broad
Inga [223]

Answer:

<h2>1. DdBb</h2><h2>2. ddBb</h2><h2>3. DB, Db, dB and db.</h2><h2>4.  dB and db.</h2><h2>5 50% or 1/2</h2><h2>6. 1/8 </h2>

Explanation:

As given, Allele for dimples(D) is dominant over alleles for no dimples (d), so D  is dominant over d.

Allele for broad eyebrows (B) is dominant over allele for slender eyebrows (b), so B is dominant over b.

A man heterozygous for both traits ( DdBb) marries a women who has no dimple and heterozygous fro eyebrow (ddBb)

So cross is =  DdBb × ddBb

1). Genotype of the man is DdBb.

2). Genotype of the woman is ddBb.

3). Genotype of the gametes produced by the man are DB, Db, dB and db.

4). Genotype of the gametes produced by the woman are dB and db.

5). Probability that their first child will have dimples 50% or 1/2

6). Probability that there first child will have both dimples as well as slender eyebrows 1/8

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