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When does the secondary oocyte complete its second meiotic division to become a mature ovum?
The secondary oocyte completes its second meiotic division upon fertilization by a sperm cell. This leads to the formation of a mature ovum and a polar body.
What specific meiotic events contribute to meiosis leads to significant genetic variation while mitosis does not?
may be its genetical diffence
Does Down syndrome progress?
it leads to death
Explain the genetic malfunction that leads to Down syndrome?
Nothing really leads to Down Syndrome, it is just an extra chromosome in the 21st pair. (otherwise known as Trisomy 21)
How is super male syndrome passed from parent to offspring?
Super male syndrome, also known as XYY syndrome, occurs when a male has an extra Y chromosome, resulting in a chromosomal pattern of XYY instead of the typical XY. This genetic condition arises during the formation of sperm, where an error in cell division leads to the extra Y chromosome. It can be passed from an affected father to his offspring if he contributes the extra Y chromosome during fertilization, resulting in a son with the XYY genotype. This syndrome is not inherited in a traditional Mendelian manner but rather occurs as a random event during sperm development.
How is down syndrome changing over time?
it leads to death
What leads to korsakoff syndrome?
"Korsakov's Syndrome" is a brain disorder caused by the lack of thiamine (vitamin B1) in the brain.
What are the two basic types of reproduction and differentiate them clearly?
There are two main forms of reproduction: 1) Asexual - In this, only a single parent is required. This is the form of reproduction in primitive organisms. The parent simply divides itself into two. The type of cell division is mitosis. The children produced are a genetic clone to the parent. Hence this is not favorable where genetic mutations are necessary. 2) Sexual - In this, two parents are required. This is the form of reproduction in higher organisms including humans. Each parent cell divided into 4 leading to cells with half the chromosome count(meiotic division). Then two meiotic cells fuse to form the zygote in which the original chromosome count is restored. It leads to genetic variation in the offsprings enabling them to survive better in the mutating environment.
Polyploidy instantly results in a new plant species because it?
Polyploidy leads to a doubling of the chromosome number, which can result in reproductive isolation from the parent species due to meiotic irregularities. Over time, this can lead to the formation of a new species with unique genetic characteristics.
what does Irritable bowel syndrome mean?
Irritable bowel syndrome is a disease in which excretion leads to the irritation of your anal section. It is an unpleasant and unfortunate disease. Irritable bowel syndrome is a common side effect.
What does this mean -irritable bowel syndrome?
Irritable bowel syndrome is a disease in which excretion leads to the irritation of your anal section. It is an unpleasant and unfortunate disease. Irritable bowel syndrome is a common side effect.
Is Turner syndrome a chromosomal error?
Yes, it is a chromosomal error which occured most likely during meiosis. It is an error in cell division called NONDISJUNCTION. The single X chromsome is maternal, which suggests that the meiotic error tends to be paternal (3/4 of cases) -Krista D. RN
