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vodka [1.7K]
3 years ago
5

What is the basic difference between primary and secondary succession

Biology
2 answers:
Kobotan [32]3 years ago
8 0
Primary succession occurs when there are no remains of the previous ecosystem.
Secondary succession occurs when there are still remains of the ecosystem, so secondary succession kind of has a head start.
sveticcg [70]3 years ago
6 0
Primary is just dirt and rock secondary has basic things such as mosses and lichens
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Answer:

25% of the heterozygous cross are short, and the offspring of a homozygous dominant and homozygous recessive pea plant will always display the dominant trait (phenotype), because they are heterozygous.

Explanation:

In this explanation, I'm assuming that the allele "T" for tall plants is dominant to the allele "t" for short plants, like in Gregor Mendel's pea plant experiment.

A homozygous tall pea plant will have the genotype "TT" and a homozygous short plant will have the genotype "tt" because homozygous means that both alleles are identical. Since "T" is dominant over "t", any plant with at least one "T" allele will be tall (the dominant trait), regardless of what the other allele is. Let's look at a Punnett square for this cross:

Explanation:

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Explanation:

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Recall that carotene and xanthophyll have very similar molecular structures except for the presence of two hydroxide groups in x
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<h2>Calculate the Rf values</h2>

Explanation:

  • In the event that an alternate dissolvable were utilized, the Rf worth would not be the equivalent on the grounds that, contingent upon the dissolvable, there is a distinction in dissolvability. On the off chance that an alternate dissolvable was utilized, the general places of the groups would be different.
  • The Rf estimation of the xanthophyll is 66% that of carotene since xanthophyll has a H bond with cellulose, which backs it off, and makes it less dissolvable in the dissolvable.
  • Carotene is progressively dissolvable in 9:1 oil ether CH3)2CO arrangement, which made it be conveyed higher and have a bigger Rf value.
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