Which statement best describes the process shown in the model?
A. It shows fertilization, in which two gametes fuse to form a zygote
with a complete set of chromosomes.
B. It shows mitosis, in which chromosomes are replicated so that
each new daughter cell receives its own complete copy of DNA:
C. It shows independent assortment, in which homologous
chromosomes line up randomly and are separated in different
combinations.
D. It shows crossing over, in which non-sister chromatids exchange
corresponding sections of DNA during meiosis.

Answers

Answer 1

Answer: D

Explanation:

Related Questions

Use this chart of a portion of a dichotomous key to answer the question.

Dichotomous Key
A dichotomous key is shown. 1 splits into 3. 3 splits into organism X and 9. 9 splits into 10 and organism Z.

Which question distinguishes organism X from organism Z?
question 1
question 3
question 9
question 10Describe how and why dichotomous keys are used.

Answers

Dichotomous keys are used to identify and classify organisms by presenting a series of contrasting questions or statements. They offer a systematic and efficient approach to identification, relying on dichotomous choices to narrow down possibilities and distinguish between different species or groups. Dichotomous keys are important tools in biology for understanding biodiversity, species identification, and ecological studies.

Dichotomous keys are tools used in biology to identify and classify organisms based on their characteristics and attributes. They consist of a series of paired statements or questions that lead the user to the correct identification of a specific organism. Each question has two contrasting options, and the user selects the option that best matches the observed characteristics of the organism being identified. By following this process of elimination, the user is able to narrow down the possibilities and reach a final identification.

Dichotomous keys are used in various fields of biology, including taxonomy, ecology, and field identification. They provide a systematic and organized approach to identifying organisms, particularly when dealing with a large number of species or when distinguishing between closely related species.

The structure of a dichotomous key allows for efficient and accurate identification. At each step, the key presents a clear and mutually exclusive choice between two options, based on observable characteristics. By choosing the option that matches the observed characteristics, the user is guided to the next set of distinguishing features until the identification is achieved.

Dichotomous keys rely on the principle of dichotomy, which means dividing or splitting into two. This binary division is essential for narrowing down the possible choices and ultimately identifying the organism. The questions in the key are carefully designed to focus on key characteristics that differentiate between different groups or species.

Overall, dichotomous keys provide a systematic and logical approach to the identification of organisms. They are widely used in biological research, fieldwork, and educational settings. By enabling quick and accurate identification, dichotomous keys contribute to our understanding of biodiversity, species composition, and ecological interactions. They serve as valuable tools for scientists, students, and enthusiasts alike, facilitating the exploration and appreciation of the natural world.

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The question probable may be:

What is the purpose and significance of using dichotomous keys in biological identification and classification?

How do human diseases caused by bacteria and diseases caused by viruses react to antibiotics?
A. Neither responds to antibiotics
B. Both respond to antibiotics
C. Viral diseases respond to antibiotics; bacterial diseases don’t
D. Bacterial diseases respond to antibiotics; viral diseases don’t

Answers

Answer:

D. Bacterial diseases respond to antibiotics; viral diseases don’t.

Explanation:

Hope this helps!

Discuss in detail vaccine against microorganism particularily antiviral

Answers

Answer:

Vaccines are substances made from components of virus, bacteria, parasites, or other microbes that are administered as a preventative measure to help protect people from infection with a particular microorganism. Vaccines help the immune system recognize and attack a particular organism, in this case, an antivirus, by introducing harmless versions of the microorganism into the body. After a vaccine is introduced, the immune system begins to build up an immunity to the specific virus, thus reducing or eliminating the risk of becoming infected.

The most common types of antiviral vaccines are made from inactivated virus particles (like the polio vaccine) or from weakened live virus particles (like the measles vaccine). Inactivated viruses are killed using heat, chemicals, or other methods, which render the virus unable to cause infection. The virus is then used to create the vaccine. Weakened live virus vaccines use live virus particles that have been altered so they cannot multiply and cause illness.

Once the vaccine is administered, it stimulates the body’s immune system to develop antibodies and remember the virus or infection. This enables the body to respond rapidly if encountered with the real virus, preventing infection and potential illness. Vaccines can be given in the form of a shot, orally, or by a nasal spray.

For antiviral vaccines, the goal is typically to prevent the transmission and spread of the virus, reduce severe illnesses, and mortality, decrease long-term disability, and prevent viral evolution that leads to drug resistance. It is also important to remember that not all viruses can be prevented with a vaccine. Vaccines are typically used to prevent infection from viruses or other pathogens that cause severe, long-term illnesses and death.

Explanation:

list and explain the function of the blood vessas

Answers

Blood vessels help maintain a constant internal temperature of an organism. The vital function of the blood vessels is protecting against the loss of blood during injuries.

Blood vessels are also involved in circulation bot oxygenated (poor) and deoxygenated (impure) blood from and to the heart

Explanation:

The function of blood vessels is to deliver blood to the organs and tissues in your body. The blood supplies them with the oxygen and nutrients they need to function. Blood vessels also carry waste products and carbon dioxide away from your organs and tissues.

The great vessels include your:

•Aorta.

•Main pulmonary artery (also called your •pulmonary trunk).

•Pulmonary veins.

•Superior vena cava.

•Inferior vena cava.

Determine which statement about the relationship between genes, DNA and base pairs is correct.

Answers

The correct statement about the relationship between genes, DNA, and base pairs is: DNA is made up of many genes, each of which is made up of thousands of base pairs.

The correct answer is option D.

Genes are segments of DNA that contain the instructions for building and functioning of specific proteins. DNA, on the other hand, is the molecule that carries genetic information in all living organisms. It is composed of a double helix structure made up of nucleotides, which consist of a sugar, a phosphate group, and a nitrogenous base. The four nitrogenous bases in DNA are adenine (A), thymine (T), cytosine (C), and guanine (G).

Base pairs refer to the specific pairing of nitrogenous bases in the DNA molecule. Adenine pairs with thymine, and cytosine pairs with guanine, forming complementary base pairs. The sequence of these base pairs along the DNA molecule determines the genetic code and carries the instructions for the synthesis of proteins.

Therefore, the correct relationship is that DNA is made up of many genes, and each gene is composed of thousands of base pairs. Genes serve as the functional units of DNA, encoding the information needed for specific traits and characteristics. The base pairs within the DNA sequence are the building blocks of genes and contribute to the genetic code. Understanding this relationship is essential for studying genetics and the transmission of genetic information from one generation to the next.

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The question probable may be:

Determine which statement about the relationship between genes DNA and base pairs is correct.

A. DNA is made up of these pairs each of which is made up of thousands of genes.

B. Genes are made up of many days peers, each of which is made up of thousands of DNA molecules.

C. Genes are made up of many DNA molecules each of which is made up of thousands of base pairs.

D. DNA is made up of many genes each of which is made up of thousands of base pairs.

RESPOND ASAP PLEASE Which measurement of water waves is equal to the amplitude of the wave?

the horizontal distance, or length, between two adjacent wave troughs

the vertical distance, or height, of a wave crest above calm water

the horizontal distance, or length, between two adjacent wave crests

the time in which one cycle of the wave passes one position

Answers

Answer:

The vertical distance, or height, of a wave crest above calm water.

Explanation:

4. (15) Some dog breeds are either black (BB, Bb) or brown (bb). However, the ability to create pigment (colour) is the result of a separate gene. For black or brown color to show, the AA or Aa must also be present; if not, the aa genotype results in no colour (albino/white). All responses must include the dihybrid Punnett squares with the results clearly stated. lting from a croce between two completely

Answers

The color of dog breeds can be black (BB or Bb) or brown (bb), and the ability to create pigment depends on the presence of the A gene (AA or Aa). The aa genotype results in no color (albino/white). Punnett squares can be used to predict the possible genotypes and phenotypes resulting from a cross between two dogs.

To determine the possible outcomes of a cross between two dogs, we can use a dihybrid Punnett square. Let's assume one dog is black (BbAa) and the other is brown (bbAA).

The Punnett square for the BbAa x bbAA cross would look like this:

Bb Ba

bb | Bbba | Bbaa

bb | bbba | bbba

From the Punnett square, we can see that there are four possible genotypes for the offspring: Bbba, Bbaa, bbba, and bbba. Among these genotypes, the Bbba and Bbaa genotypes will result in black-colored dogs, while the bbba and bbba genotypes will result in brown-colored dogs.

It's important to note that the presence of the A gene is necessary for color to be expressed, so the aa genotype would result in no color (albino/white) regardless of the B gene.

In summary, the use of a dihybrid Punnett square allows us to predict the possible genotypes and phenotypes of offspring resulting from a cross between dogs with different color and pigment gene combinations.

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A series of choices between two characteristics that is used to identify organisms is called a
characteristic chart.
characteristic key.
dichotomous chart.
dichotomous key.

Answers

The answer is Dichotomous Key

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