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

Q: What are the two divisions of meiosis? What are the main events that occur in those divisions?

A: Cell division is the biological process that results in the formation of two identical daughter…

Q: How is aneuploidy different from polyploidy? What are the mechanisms by which aneuploidy and…

A: Cells are the fundamental unit of life. Cell division is the process by which two daughter cells…

Q: How does crossing-over affect the genetic content of the haploid gametes?

A: Gametes are produced in organisms through the process of sexual reproduction. Sexual reproduction…

Q: What is the relationship between nondisjunction and aneuploidy?

A: A karyotype represent all chromosomes that are found in an organism. In human beings, there are 23…

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 types of aneuploidy?

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

Q: Explain why genes located on the same chromosome are said to be linked. Why do alleles of linked…

A: A gene is a unit of hereditary arranged in thousands on the strands of DNA(deoxyribonucleic acid)…

Q: How is the process of meiosis responsible for variation among species? What mechanisms are involved…

A: Meiosis is a type of reductional division in which a diploid parent cell divides to form four…

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

A: Introduction - Crossing over is a biological event in which chromosomes of the same kind line up…

Q: What aspect of chromosome behaviour most clearly accounts for Mendel's law of segregation?…

A: Ans.Mendel's law of segregation states that each parent passes one allele for each trait to its…

Q: If zebrafish have a diploid number of 12, what is the chromosome number in the daughter cells of the…

A: Please follow step 2 for detailed explanation.

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: 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 are linked genes similar to sex-linked genes? How are they different?

A: The term gene was derived from the Greek word meaning generation. It is the basic hereditary unit of…

Q: What is meant by aneuploidy?

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

Q: Why does more crossing over occur between two distantly linkedgenes than between two genes that are…

A: Answer- Crossing over is the mechanism in which a part of the sister chromatids of the homologous…

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: Do you know of any genetic diseases or disorders that result from errors in mitosis or meiosis? How…

A: Introduction: Mitosis and meiosis are processes and fundamental stages of cell division and cell…

Q: How is variation introduced into the genome by meiosis

A: Meiosis is a kind of cell division in which single diploid cell divides twice and four haploid cells…

Q: What is the Law of Independent Assortment and how does this “law” relate to meiosis?

A: Introduction :- The alleles of two (or more) distinct genes are sorted into gametes independently of…

Q: Where do centromeres dissolve in meiosis?

A: Meiosis is a kind of cell division occurring in the germ cells of the body that gives rise to four…

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 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 are homologous chromosomes? What happens to homologous chromosomes during meiosis?

A: Meiosis is reductional division. Mitosis is equational division.

Q: What is chromosomal mapping?

A: A chromosome contains all of the genetic material of an organism. Almost all the eukaryotic…

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: