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Jobisdone [24]
3 years ago
5

A prehistoric object is one that comes from a time .....?

Biology
1 answer:
My name is Ann [436]3 years ago
8 0

Answer: A. before history was written.

Explanation:

I'm not sure if you need an explanation, but prehistoric means "very old or out of date." Hope this helps, Good luck! :)

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10. If there are very few differences in the DNA of two different species, what can we infer about their relationship? For examp
Burka [1]

Answer:

Chimpanzees.

Explanation:

DNA sequence similarity is helpful to determine the evolutionary relationship between the organisms. The evolutionary tree can easily be constructed if the percentage of the DNA sequence similarity is known.

The human shows 98.8% sequence similarity with chimpanzee. The sequence similarity between human and gorilla DNA is 98.4%. This means Chimpanzee are more closely related to humans than gorillas.

Thus, the answer is chimpanzee.

4 0
3 years ago
Why are coral reefs overexploited?
melamori03 [73]
 Coral reefs<span> are also being degraded by many other factors. The list of problems can seem endless: overfishing, fishing using cyanide and dynamite, pollution from sewage and agriculture, massive outbreaks of predatory starfish, invasive species, and sedimentation from poor land use practices</span>
3 0
3 years ago
Which genotype determines that a person does NOT have sickle-cell anemia, but has the potential to pass the genetic disease on t
anyanavicka [17]

Answer:

<em>The correct option is C) AS</em>

Explanation:

Sickle cell anaemia is a recessive disorder in which the blood of the person is not able to clot properly. For sickle cell to occur, both the alleles for the trait have to be recessive. A person who has a dominant and a recessive allele will be heterozygous, showing the dominant characteristics. But such a person will be a carrier for the disease. There will be chances for the offsprings of that person to actually have the disease.

7 0
3 years ago
The study of the function of specific organ systems is called
mart [117]

Answer:

Systemic Physiology

Explanation:

8 0
2 years ago
1.What do taxonomists study? How does this benefit other disciplines of biology? 2.What is a holotype? Why are these extremely u
laila [671]

1. What do taxonomists study? How does this benefit other disciplines of biology?

Taxonomist is the professional who makes the description, indetification and classification of all living things. This science is very important in the elaboration of inventaries and description of our planet's biodiversity. Taxonomy helps us to understand the evolutionary line and, consequently, to understand how interactions in nature work, which factors influenced the evolution of species (climate change, natural events, genetic modifications).

2.What is a holotype? Why are these extremely useful distinctions for scientists? What does it allow them to evaluate?

Single sample or model that serves as a reference basis for the first description and nomenclature of a species. Because it is the model specimen to begin classifying a new taxon, halotypes are the only basis scientists have for starting this process. The halotype allows scientists to analyze all its morphological characteristics that will serve as the basis for classifying other organisms of the same taxon. As long as the holotype exists, it will keep the name of the taxon fixed regardless of future changes that may occur.

3.Would you like to be a holotype? Why or why not?

Yes.  Because holotype organisms are unique and extremely important. They are always consulted and never forgotten.

4.What are some of the problems researchers face in classifying organisms?  

Classifying new species that have no prior information, rearranging genera that have been changed, and discontinuing old names are some of the difficulties faced by taxonomists. Researchers often conflict, resulting in some delay in classification.

5.How do scientists approach these problems? Once an organism is classified, is this classification set in stone? Why or why not?

Taxonomists always seek to exchange information with other taxonomists from other parts of the world, access databases, perform comparative DNA tests to find similarities in order to correctly classify organisms. Classifications are never unchanging. Taxonomy evolves along with technological advances. Due to the constant evolution of genetic engineering, molecular biology and computer programs, often the old classifications end up having to be altered because it is found that based on DNA analysis, an organism actually belongs to another classification, or belongs to none. In the latter case, it is necessary to create a new classification, or dismember the taxon.

6 0
3 years ago
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