Reproduction Whats the difference in these two forms

Reproduction What’s the difference in these two forms of reproduction?

White boards: How does sexual and asexual reproduction affect the passing of traits to offspring?

Reproduction § Cells make more cells through the process of …(cell division) Mitosis § Sex cells are created in a process called… Meiosis § Adults produce offspring with the help of which system… Reproductive System

For this unit, we will look at reproduction with a more specific focus on the passing of traits.

Reproduction Asexual vs. Sexual

Asexual Reproduction

Asexual Reproduction § § Most unicellular organisms, and a few multicellular organisms use cell division to reproduce in a process called asexual reproduction. A parent organism produces one or more new organisms that are identical to the parent and live independently of the parent.

Asexual Reproduction § The organism that produces the new organism or organism is the parent § Each new organism is an offspring § The offspring produced by asexual reproduction are genetically identical to the parent.

Asexual Reproduction

Asexual Reproduction Binary Fission is a form of asexual reproduction that occurs in cells that do not contain a nucleus (Prokaryotes). DNA is found in the nucleoid.

Asexual Reproduction

Other Examples of Asexual Reproduction

Types of asexual reproduction

Sexual Reproduction

Sexual Reproduction Type of reproduction in which two parent cells (male and female reproductive cells) combine to form offspring with genetic material from both cells. Creating offspring with unique combinations of characteristics.

A Eukaryotic cell has a nucleus that contains genetic material. Heredity is the passing of genes from parents to offspring. A gene is a section of DNA that provides instructions for specific traits.

A Chromosome is the structure that holds the genetic material (DNA). DNA is the genetic material that provides instructions for all the body’s functions.

Sexual Reproduction § § Each species of living things has a characteristic number of chromosomes. Humans have 23 pairs, for a total of 46 chromosomes.

Sexual Reproduction § What is the purpose of Meiosis? Make Sex Cells § What is our general description of Meiosis? One Cell Makes Four Cells

23 and Me Watch video—take notes in ISNB https: //www. 23 andme. com/gen 101/genes/

Sexual Reproduction § The process of Meiosis creates sex cells (sperm and egg in humans) that contain half the genetic material (half the 46 chromosomes) § During sexual reproduction, sex cells are combined to form unique offspring. 46 Chromosomes 23 Chromosomes

Sexual Reproduction

Sexual Reproduction

Sexual Reproduction key words zygote: is a fertilized eukaryotic cell that has received genetic information from two gamete cells (sperm cell and an egg cell) to form a new individual. gametes: cells from each parent that combine to form a zygote. Male gametes are called sperm. Female gametes are called eggs. chromosomes: a DNA molecule that carries all of the hereditary information in the form of genes: basic unit and function of heredity. Act as instructions to make molecules called proteins. Traits: inherited characteristics from parents.

Investigating Reproductive Processes Activity Which is which? ? ?

Investigating Reproductive Processes Activity sexual asexual

Comparing Asexual & Sexual Reproduction In your ISNB (interactive science notebook)—left side— Draw and complete the graphic organizer shown here.

TOTD: Answer the EQ below. Essential Question: How does sexual and asexual reproduction affect the passing of traits to offspring? 1. 2. 3. 4. 5. 6. Mitosis Trait Gene Meiosis Gamete Zygote a) fertilized egg b) cell division c) sex cell d) gives instructions e) reproduction f) inherited characteristics