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Genetics

This section covers topics of genetics such as variation, pedigrees, Mendelian genetics and mutations.

500 Questions

In any given 3mm of blood what is the approximate ratio of the number of red blood cells erythocites to white blood cells leukocytes?

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Asked by Wiki User

There are about a thousand times as many red blood cells as white cells.

Consider that the red blood cells (or erythrocytes) in a mm3 (or microliter) of blood number about five million in an average man (a few less in a woman). The white blood cells (or leukocytes) number only 5-6 thousand per mm3 so the ratio is about a thousand fold.

What is complimentary training?

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Asked by Wiki User

Complimentary training is next step of training after fundamental training. It is stage of training when the trainees are divided into regiment or departments and trained for their actual goal.

Cancer-causing viruses are known as?

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Asked by Wiki User

Cancer-causing viruses are known as oncogenic viruses or tumour viruses. These viruses can integrate their genetic material into the host cell's DNA, disrupting normal cellular functions and promoting uncontrolled cell growth, which can lead to the development of cancer. Examples of oncogenic viruses include human papillomavirus (HPV), hepatitis B virus (HBV), hepatitis C virus (HCV), Epstein-Barr virus (EBV), and human T-cell lymphotropic virus (HTLV). These viruses can cause various types of cancer, such as cervical cancer (HPV), liver cancer (HBV and HCV), nasopharyngeal carcinoma (EBV), and adult T-cell leukaemia/lymphoma (HTLV).

Would your hair go curly if you plaited it?

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Asked by Wiki User

If you have straight hair and you plait it, it is possible that your hair might become temporarily wavy or curly once you undo the plaits.

Plaiting or braiding the hair can create waves or curls because it introduces twists and bends into the hair strands.

When you plait straight hair, the hair is folded and twisted, and this can cause the hair to take on a different shape.

The longer you keep the plaits in place, the more pronounced the wave or curl pattern is likely to be when you remove them.

However, it's important to note that the extent to which the hair becomes curly or wavy will vary depending on several factors, including your hair type, thickness, and natural texture. Some individuals may see more noticeable results with plaiting, while others may experience minimal changes or none at all.

Who is mathiew schlider?

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Asked by Wiki User

A Botonist and Scientist that concluded that all plants are made up of cells

What are the two properties that make up DNA?

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Asked by Wiki User

DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. It carries the genetic instructions that determine the biological development of an organism. There are two key properties that define DNA:

Double Helix Structure: DNA is made up of two strands that coil around each other in a shape known as a double helix. This twisted ladder-like structure is essential for DNA replication and protein synthesis. The sides of the ladder are made of sugar-phosphate backbones, while the rungs of the ladder are formed by complementary pairs of nitrogenous bases.

Where did the myth of Alexandria's genesis originate?

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Asked by Wiki User

It is an internet fable. From all research, this thing was started by a band of fiction writers. There is simply no basis, nor any listing in any medical research for this "genetic disorder". The loose time frame seems to be somewhere in the late 1980's.

What is the scientific name for a Witch?

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Asked by Rebekahlos

There is no scientific name for a witch as witches are fictional characters in folklore and mythology.

Is AA an homozygous or an heterozygous?

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Asked by Wiki User

AA could be either homozygous or heterozygous, depending on whether the individual inherited the same allele (A) from both parents (homozygous) or different alleles (Aa) from each parent (heterozygous).

What is the small ring of DNA in bacteria?

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Asked by Wiki User

Bacteria generally have one (and only one) circular chromosome. However, they can also contain smaller rings of DNA called plasmids. These plasmids are generally not essential to cellular functions, but serve a variety of purposes. For example, they can serve as cloning vectors.

RNA viruses are also called?

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Asked by Wiki User

Viruses with RNA as their genetic material are called retroviruses. They use the enzyme reversetranscriptase to transcribe their RNA genome into DNA, which is then inserted into the host's genome.

Why do cancer cells reproduce so rapidly?

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Asked by Wiki User

Here we propose that mutation of cancer cells and of tumorigenic cell lines in culture is due to chromosome reassortments and that reassortments at high rates are catalyzed by aneuploidy, an abnormal balance of chromosomes.

A cancer can continue to grow because cancer cells act differently than normal cells. Cancer cells are different from normal cells because they: divide out of control. are immature and don't develop into mature cells with specific jobs.

What are the three points of the cell theory?

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Asked by Wiki User

1) all living things are composed of cells

2) cells are the basic units of structure and function in an organism

3)cells come only from the reproduction of existing cells

How is ACTH production controlled?

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Asked by GaleEncyofMedicine

ACTH production is primarily regulated by the hypothalamus and pituitary gland through a feedback mechanism. The hypothalamus releases corticotropin-releasing hormone (CRH) in response to stress or low cortisol levels, which then stimulates the pituitary gland to release ACTH. ACTH, in turn, stimulates the adrenal glands to produce cortisol. When cortisol levels are high, negative feedback mechanisms reduce the production of CRH and ACTH, thus maintaining hormonal balance.

Is Aa and AA a dominant phenotype?

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Asked by Wiki User

Yes, both Aa and AA genotypes represent the dominant phenotype for a specific trait. The presence of at least one dominant allele (A) will result in the dominant phenotype being expressed.

What is genotype AA?

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Asked by Wiki User

Genotype AA refers to an individual who has two copies of the A allele for a particular gene. In genetics, genotypes are the specific combination of alleles an organism carries for a particular trait. In this case, the individual would express the trait associated with the A allele.

Can scientists combine the DNA from an animal with a human?

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Asked by Wiki User

It is theoretically possible to combine animal DNA with human DNA, but it raises significant ethical and safety concerns. Such experiments are generally prohibited due to the risks involved and the potential for creating unpredictable and ethical dilemmas.

Does amylase use cellulose as a substrate?

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Asked by Wiki User

No, amylase does not use cellulose as a substrate. Amylase is an enzyme that breaks down starch into simple sugars like maltose and glucose. Cellulose is a complex carbohydrate that requires other enzymes, like cellulase, for its breakdown.

What makes plant cell more rigid than animal cell?

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Asked by Wiki User

Plant cells have a rigid cell wall made of cellulose that provides structural support, while animal cells do not have this feature. The cell wall allows plant cells to resist osmotic pressure and maintain their shape, giving them a more rigid structure compared to animal cells.

How can you tell if you are going to be hairy?

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Asked by Wiki User

Genetics plays a significant role in determining how hairy a person will be. If your family members have significant body hair, there is a higher likelihood that you will also develop more hair. Hormonal factors can also influence hair growth, so if you're experiencing hormonal changes, you may notice an increase in hair.

What are the 8 characteristics of life?

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Asked by Wiki User

1. 1+ cells

2. displays organization

3. grows and develops

4. reproduces

5. responds to stimuli

6. requires energy

7. maintains homeostatis

8. adapts

Chromosomes first become visible during which phase of mitosis?

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Asked by Wiki User

Chromosomes first become visible during prophase of mitosis when they condense and coil up tightly. This allows them to be easily seen under a microscope as separate structures.