Answer: sexually reproducing organisms
Explanation: In most sexually reproducing organisms, each adult has two copies of each gene--one from each parent. These genes segregate from each other when gametes are formed. Alleles for different genes usually segregate independently of each other.
the stomach is c, the appendix is d, the rectum is b, and the duodenum is a
Answer:
Explanation:
1 Long term exposure to harmful genotoxic chemicals or ionizing radiation can cause changes in the base sequence of DNA.Chemicals might induce DNA mutations, such as polycyclic hydrocarbons (fumes found in oil stations, or smoke from a tobacco cigarette), intercalating agents such as Ethidium Bromide (carcinogen), but also radiations such as UV-radiation (C and T bases are most vulnerable and would bind to identical bases unstead of their
2 Genetic changes that are described as de novo (new) mutations can be either hereditary or somatic. In some cases, the mutation occurs in a person’s egg or sperm cell but is not present in any of the person’s other cells. In other cases, the mutation occurs in the fertilized egg shortly after the egg and sperm cells unite. (It is often impossible to tell exactly when a de novo mutation happened.) As the fertilized egg divides, each resulting cell in the growing embryo will have the mutation. De novo mutations may explain genetic disorders in which an affected child has a mutation in every cell in the body but the parents do not, and there is no family history of the disorder.
Somatic mutations that happen in a single cell early in embryonic development can lead to a situation called mosaicism. These genetic changes are not present in a parent’s egg or sperm cells, or in the fertilized egg, but happen a bit later when the embryo includes several cells. As all the cells divide during growth and development, cells that arise from the cell with the altered gene will have the mutation, while other cells will not. Depending on the mutation and how many cells are affected, mosaicism may or may not cause health problems.
Answer:
Both DNA and RNA
According to transcription we have DNA that will form MRNA
Answer:
The symptoms that a person with low testosterone would exhibit: fatigue, irritability, low sex drive, low strength, erectile dysfunction, hair loss, amongst others.
Explanation:
When the body is not producing enough testosterone, that is, low levels of testosterone -a very important sex hormone- it leads to a condition called male hypogonadism.
Depending on the age of the person, the male exhibits different symptoms. The most common ones are:
- Fatigue
- Irritability; mood changes; depressive symptoms
- Low sex drive
- Erectile dysfunction
- A reduction in the strength of the body
- Hair loss
This condition could be the result of different factors, such as <u>aging, chemotherapy, increased alcohol levels, radiation</u>, and diseases or syndromes such as <u>HIV, Kallman syndrome, hypothyroidism</u>.
