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aleksandr82 [10.1K]
3 years ago
9

Drag the tiles to the correct boxes to complete the pairs.

Biology
2 answers:
Ulleksa [173]3 years ago
7 0

bottleneck effect --- > A disease wipes out almost 90% of a population of birds, but the species adapts, and after 5 years its numbers increase dramatically.


gene flow --->  A population of rats travels on a cargo ship and mate with rats in a new region.


founder effect ---> Biologists introduce a small population of lizards on an island as part of a conservation effort.



mutation ---> A change in a DNA sequence causes a lizard to develop a darker skin color, which helps it hide from predators.


lukranit [14]3 years ago
3 0

The right matches are :

Bottleneck effect is matched with Disease wipes out almost 90% of a population...

Gene flow is matched with Population of rats travels...

Founder effect is matched with Biologists introduce a small population...

Mutation is matched with Change in a DNA sequence...


The mutation is simply defined by a change in the nucleotide sequence of the DNA of a species.

The founder effect is genetic variation that occurs when a new population is established.

The bottleneck effect is a major decrease in a population of species due to a spontaneous or provoked phenomenon.

gene flow is an addition of a new allelic lot in a population (introduction of individuals into a population of which they were not originally a part).

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The answer is; A & C

The lagging strand is replicated in fragments called Okazaki fragments, each initiated by a primer. The fragments are later joined into one strand by DNA ligase. Replication occurs by adding nucleotides to the 3’ end of a preceding nucleotide. Because the lagging strand is antiparallel to the leading strand, the replication of the lagging strand is in the opposite direction as the replication fork direction. This is why the lagging strand is replicated in fragments because replication is being carried out by a single DNA polymerase (moving in the direction of the replication fork) per replication fork.  


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3 years ago
Which statements correctly describe mutations in gametes and mutations in somatic cells?
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A mutation is a rare, accidental or induced modification of genetic information (DNA or RNA sequence) in the genome.


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Somatic mutations do not affect cells intended for reproduction, so they are never hereditary:

* Post-zygotic mutations are the mutations that appear in the egg after fertilization. They are rarer and are expressed as mosaic in the individual concerned (the mutation will be present only in the daughter cells originating from the mutated embryonic cell).

* Mutations can appear throughout life on the DNA of any cell; they are then transmitted to the line of the daughter cells. These can, in some cases, become tumor cells and then form cancer.

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Explanation:

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8

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