What are the types of aneuploidy?

Q: What is aneuploidy? Whatare the conditions caused bythe aneuploidies?

A: The chromosomes are thread-like structure located in the nuclei of both plant and animal cells. They…

Q: Draw a simple sketch illustrating how nondisjunction in meiosis can lead to Down syndrome.

A: To draw: A simple sketch illustrating how nondisjunction in meiosis can lead to Down syndrome

Q: What is crossing over, when does it occur and what is its importance?

A: A chromosome is an organized package of DNA found in the nucleus of the cell. Different organisms…

Q: what is the benefit of crossing over?

A: REPRODUCTION:- It is the production of offspring from the parents. It is of two types:- 1)Asexual…

Q: What are the 4 types of chromosomal aberrations?

A: Chromosomal aberrations are any change in the normal structure or number of chromosomes resulting in…

Q: what are the clones of aneuploid cells

A: The cells that have abnormal number of chromosomes are known as aneuploid cells. This condition is…

Q: Describe how nondisjunction results in aneuploidy disorders, and describe the syndrome/ symptoms/…

A: Nondisjunction means the failure of homologous chromosomes or sister chromatids to separate during…

Q: How does the law of segregation reflect the events of meiosis?

A: Law of segregation: This is one of the laws of Gregor Mendels Law of Inheritance. This law says that…

Q: Why does aneuploidy usually have a detrimental effect on phenotype while polyploidy doesn't have as…

A: During the segregation events of cell division when separation does not occurs properly then…

Q: What are the products of crossing over?

A: The process in which parent cells divide and produce two or more daughter cells is referred to as…

Q: What is crossing over? In which period of meiosis does this event occur?

A: Meiosis is a mode of cell division in which a cell divides into four cells. It occurs in gametes.

Q: How does the law of independent assortment reflect the events of meiosis?

A: The Principle of Independent Assortment explains how different genes differentiate from one another…

Q: What is inversion heterozygotes ?

A: Heterozygote can be defined as the genes that are  for the specific trait are considered to be…

Q: What are linked genes?  What is the difference between tightly-linked and loosely-linked genes?

A: Genes which get inherited In conjunction with other genes and are found on the same chromosome is…

Q: What happens When a gamete is fertilized by a standard haploid gamete ?

A: BASIC INFORMATION  GAMETES  These are basically the reproductive cells of the organisms. Sex cells…

Q: What is crossing over? Howis meiosis related to thisphenomenon?

A: Meiosis : A type of cell division in which parent cell give rise to 4 haploid (n) daughter cells.…

Q: Define nondisjunction and explain how it causes aneuploidy. Name two syndromes resulting from…

A: The chromosome is the package of densely packed chromatin fibers with DNA and histone proteins. In…

Q: Describe the Principles of Segregation and Independent Assortment in terms of Genetics. How do these…

A: The law of segregation describes how two alleles governing a single trait separates randomly during…

Q: what are allopolyploids.?

A: Every organism contains a definite amount of chromosomes, made up of DNA and protein, and is passed…

Q: What are the 8 stages of meiosi

A: Meiosis is a type of cell division in which the parent cell divides twice into four daughter cells…

Q: How does a chromosomal duplication occur?

A: When a part of chromosome is present in two copies or duplicated, it is known as duplication. This…

Q: What is the cause of aneuploidy?

A: Chromosomes are long thread-like structures that carry coded genetic information in the form of DNA.…

Q: What is crossing over? How is meiosis related to this phenomenon?

A: Linked alleles, such as A-b and a-B, combine to form the gametes A-b and a-B, which are responsible…

Q: What is inversion heterozygote?

A: Inversion is a chromosomal rearrangement when a segment of chromosome breaks and then rejoins in…

Q: What is the rule of inversion?

A: Genes are the functional unit of heredity. The genes code for proteins which are vital for growth…

Q: During meiosis, does random assortment occur before or after crossing-over?

A: Meiosis is the cell division that includes meiosis I and meiosis II without any DNA replication…

Q: List four major types of aneuploidy.

A: Chromosomes are thread-like structures situated inside the nucleus of plant and animal cells.…

Oogenesis

The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase. 

Cell Division

Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons: