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AnnZ [28]
3 years ago
8

What is a mass extinction?​

Biology
2 answers:
rjkz [21]3 years ago
8 0

Answer:

A mass extinctions is a rapid decrease in the biodiversity on Earth.

Explanation:

For example, the Dinosaurs.

Korvikt [17]3 years ago
6 0

Answer:

The extinction of a large number of species within a relatively short period of geological time.

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The ability of one genotype to reproduce more successfully relative to other genotypes is referred to as a. fitness. b. exclusiv
wlad13 [49]

Answer: Option A.

Fitness.

Explanation:

Fitness is the survival or reproductive rate in which a genotype or phenotype have the ability to reproduce more successfully or leave offsprings relative to other genotypes or phenotypes. It is the quantitative representation of natural or sexual selection. It is represented by w.

5 0
3 years ago
A normal chromosome and its homolog carrying an inversion are given. the dot (•) represents the centromere. normal: a b c • d e
kotegsom [21]

The type of inversion is Paracentric inversion.

There are two types of inversion at the chromosome level, depending on the centromere:

Paracentric inversions:

the centromere is not included in the inversion.

Pericentric inversions:

The centromere is included in the inversion which can transform a metacentric chromosome into an acrocentric chromosome.

the structure that will form during synapsis is inversion loop.

These inversions are balanced rearrangements but at the moment of meiosis they cause difficulties in pairing. There is most often formation of a pairing loop. The occurrence of recombination in the inverted segment causes the formation of abnormal gametes by duplication / impairment.

4 0
3 years ago
A student is reviewing functions of the cell. the student would be correct in identifying a chief function of the nerve cell as
igor_vitrenko [27]
Process, transmit, and receive nerve impulses (electrical signals) from periphery to central nervous system.
8 0
3 years ago
Read 2 more answers
Lichens are among the slowest-growing organisms, but their tolerance of environmental extremes enables them to colonize habitats
bekas [8.4K]

Answer:

The correct option is B.

Explanation:

Lichens  is regarded as a mutual relationship between a mycobiont and photobiont, the relationship is targeted at enhancing their survival in extreme environments. The mycobiont is a fungal while the photobiont is usually a green alga or a mycobacterium. Each of the organism has their specific tasks; the mycobiont provides suitable habitat for the photobiont while the photobiont provide energy for the whole system.

7 0
3 years ago
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Are Fungi beneficial or harmful? Explain
Nata [24]

Answer:

Honestly it depends...

Explanation:

I would say overall fungi are beneficial because they feed on dead organic matter. They recycle most of the carbon and release nutrients to be used by other organisms. They are also used for medicinal purposes. Not to mention yeast is a fungus and bread is yummy.

But certain fungi are deadly if ingested or linked to plant and human diseases. Also mold is a fungus and nobody likes mold.

6 0
3 years ago
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