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Novay_Z [31]
3 years ago
9

Are index fossils rare

Biology
2 answers:
Eddi Din [679]3 years ago
4 0
Index Fossils of plant origin are very rare.
Leokris [45]3 years ago
4 0
Yes very they are very rare findings
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If all the genes of e. coli were active at once what would happen
Jobisdone [24]
I agree with the first answer they would contrast is correct
4 0
3 years ago
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Which explains why secondary succession generally occurs more rapidly in an area than does primary succession?
xeze [42]

Answer:

D.

Explanation:

Soil formation takes a while, so it already being formed takes away alot of time. Hope this helps.

7 0
3 years ago
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2 years ago
Alu element at the PV92 locus on Chromosome 16. In this population, 436 people have a heterozygous genotype and 102 people have
Lesechka [4]

Answer:

Explanation:

According to the exercise we can infer that for the Alu insert:

p: positive allelic frequency

q: negative allelic frequency

maintaining that the population is in equilibrium we can carry out the following formula

p + q = 1 and pp + 2pq + qq = 1

looking for the genotype frequency we clear and obtain the following data

genotype frequency of 2pq = 436/1000 = 0.436

The genotype frequency of qq = 102/1000 = 0.102

This is how we look now:

number of positive people for Alu = 1000- (436 + 102) = 1000- 538 = 46

In this way it is resolved that:

genotypic frequency of pp = 462/1000 = 0.462

  p = 0.462 + (0.436 / 2) = 0.462 + 0.218 = 0.680

q = 0.102+ (0.436 / 2) = 0.102 + 0.218 = 0.320

According to the exercise carried out it is deduced:

The value of p in the population is = 0.68

We conclude that our prognosis showing a homozygous positive genotype is: 0.462

6 0
3 years ago
Which of the following is an example of post-transcriptional control of gene expression?
konstantin123 [22]

Answer:

Option (c).

Explanation:

Transcription may be defined as the process of formation of RNA molecule from the template DNA with the help of enzymes and transcription factors. The transcription occurs in 5' to 3' direction.

Post trancriptional modification occurs in the RNA molecule that plays an important role in transcription as well as translation. The introns are removed from the RNA transcript and exons joined together is known as splicing. The alternative splicing occurs in which different protein isoforms are formed by the single exons.

Thus, the correct answer is option (c).

5 0
3 years ago
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