Cytosine is which DNA based paired and bond to cytosine?

Answer:

Model

Explanation:

• A representation of a real object or system in its physics, conceptual or structural form is called the model of that object or system.
• A model only represents an object or system but is not the object/system itself.
• An example of the model of a system can be a model representing the water cycle which symbolically explains the systemic process and an example of a model of an object can be a globe which is a representative of the earth.
• The model tries to simplify our understanding of the given object/system and hence there is a little deviation from the real object/system.
• The purpose of the model is usually to provide basic knowledge regarding that particular object/system by giving a simpler representation.

DNA and RNA are the genetic code. They are passed form the ancestor to offspring. They code for a mix of traits from the parents and tell the cells what to do what traits to form, and overall how to function

A group of species that have a similar characteristic is called a family. Therefore, the correct statement is option C.

What is biological classification?

Biological classification is the science of organizing living organisms on their evolutionary relationships. Taxonomy allows scientists to provide a systematic way of naming and classifying organisms. Within each kingdom, organisms are classified into specific categories. The basic unit of classification is the species, which involves a group of organisms that have a ability to produce a viable offspring.

Above the species level, organisms are grouped into genus, families, orders, classes, phyla, and kingdoms. These taxonomic ranks are arranged in a hierarchical manner. For example, a family encompasses several genera, and a genus encompasses several species.

Families are groups of similar genera. It typically includes several genera of closely related species. A family is a taxonomic rank that comes above the genus and below the order, therefore, it constitutes several genus with closely related species.

Therefore, family is a group of species that have a similar characteristics.

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Final answer:

A probe uniquely hybridizes to a specific target gene due to the principle of complementary base pairing, meaning it only binds to the gene with the exact complementary sequence.

Explanation:

A DNA probe will hybridize to a target gene but not to any unrelated genes because each probe is uniquely matched to a specific target gene sequence. This process takes advantage of the principle of complementary base pairing, where adenine pairs with thymine and cytosine pairs with guanine in DNA sequences. Hence, the probe, which is a short synthetic DNA sequence, will only bind with, or 'hybridize' to, the target gene that has the complementary sequence. For instance, if the probe sequence is AATGC, it will bind to the gene sequence TTACG but not to any unrelated genes with different sequences.

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Answer:

A main cause of speciation is when species become geographically isolated.

Explanation:

Speciation refers to a process in which a population turns into a different species. One of the main causes of this is geographic isolation because when a population is separated because of a barrier like a river, this population adjusts to the specific environment and it becomes different from another population that can't breed with the members of this population.