Hereditary and Gene Expression

Who is this and what are his two principles?

He was a part of a monastery who developed principles that reflect the existence of genes, chromosomes and the process of meiosis

Two principles are called: Principle of Segregation and Independent assortment.

What is sexual reproduction?

Involves the regular alternation between meiosis and fertilization

What is Meiosis?And when does it occur?

The process of nuclear division in which the chromosome number is reduced from the diploid (2n) to a haploid number (n). This creates cells with half the number of normal chromosomes.

Occurs during the production of spores, flowers, cones or similar structure.

What is Fertilization/ Syngamy?

The process which two haploid cells (gametes) fuse to from a diploid zygote

A make gamete (sperm) and a female gamete (egg) fuse to form a zygote.

What is a homologous chromosome/ homologs?

They are members of a pair of chromosomes, that one comes from one parent and one from another parent. These are present in the zygote

The interactions determines the genetic characteristic of a diploid organism.

What is the difference between Gametes and Spores?

Spores: Haploid, that can develop into an organism without reuniting with another cell. They divide Mitotically producing organism that are haploid

Gamete: Is a cell that unites with other gametes to produce a zygote

What is conjugation?

Transfer of genetic material occurs through a cytoplasmic connection that forms once the cells are in contact.

What is a haploid cell and a diploid cell?

Haploid (n)(gametes) contains a single set of chromosome. Ex: occurs at the end of meiosis/ meiosis 2, resulting in four haploid cells

Diploid: two sets of chromosomes: Meiosis occurs in diploid cells to produce a haploid gamete or spore

What is Zygotic Meiosis?

What is gametic meiosis

What is sporic meiosis?