Sexual vs. Asexual Reproduction Mitosis & Meiosis.

Slides:



Advertisements
Similar presentations
Meiosis and Reproduction
Advertisements

Why does reproduction require 2 types of cell division?
Cell Division and Types of Reproduction
Meiosis Chapter 4.3 Guided Notes.
 Sexual Reproduction – type of reproduction in which the genetic materials from two different cells combine, producing an offspring  Sperm – male sex.
Sexual Reproduction and Meiosis. Reproduction Organisms can reproduce asexually - mitosis, fission, & budding.
Methods of Asexual Reproduction This is what it would look like if humans reproduced by fragmentation!
Sexual vs. Asexual Reproduction Mitosis & Meiosis.
MEIOSIS: The Production of Sex Cells *Click for Animation*
Reproduction. Asexual Reproduction –Asexual Reproduction- Process by which a SINGLE organism produces offspring that have the same genetic material. –Binary.
Biology 7.2 Sexual Reproduction
Mitosis vs. Meiosis. What is the difference Mitosis is asexual reproduction. Does not produce a new organism. Mitosis is asexual reproduction. Does not.
Animal Cell.
Sexual Reproduction and Meiosis. Reproduction Organisms can reproduce asexually - mitosis, fission, & budding.
Asexual Reproduction Advantages and Disadvantages.
REPRODUCTION STRATEGIES Genetics Unit November 9, 2015.
Unit IV: Can You Divide?. Cell Reproduction All organisms REPRODUCE. Why? –This allows for growth, development and the survival of the species.
Chapter 2 Parents and Offspring.
Mitosis & Meiosis. Mitosis Asexual Cellular Reproduction Asexual Cellular Reproduction.
SEXUAL AND ASEXUAL REPRODUCTION. A characteristic of living things is that they produce new organisms through the process of reproduction.
 Sexual reproduction is a type of reproduction in which the genetic materials from two different cells combine, producing an offspring. Sexual reproduction.
9/28 warm-up What is asexual reproduction What is sexual reproduction
Reproduction Introduction Asexual reproduction: 1. The prefix “A” comes from the Greek language and means without. 2.The term asexual means without to.
Aim: How do organisms reproduce? Who thinks they can define Reproduction? The process by which living things produce other living things like themselves.
Sexual vs. Asexual Reproduction. Extra chromosomes allow all female lizards to reproduce without males  double their chromosomes twice before everything.
Asexual vs. Sexual Reproduction.  Parent cell first copies its DNA  Then divides into 2 separate cells  New cells have a complete copy of parent’s.
A comparison…. Any form of reproduction in which the offspring are genetically identical to the parent A single parent grows a clone or copy of itself.
Sexual Reproduction.
Reproduction (to make sure a species can continue)
Types of Reproduction & Development
Aim # 52: How do organisms reproduce?
Meiosis and Mitosis Mitosis is the dividing of a cell to make an exact copy of the original cell. Meiosis is the dividing of a cell to make four copies.
Types of Reproduction in the Animal Kingdom
Asexual vs. Sexual Reproduction
Reproduction: Mitosis and Meiosis
Sexual vs. Asexual Reproductions
Sexual and Asexual Reproduction
Mitosis The parent cell splits to produce two IDENTICAL daughter cells… each with the same number of chromosomes as the parent (46 chromosomes in humans)
DO NOW!!! True or False Reproduction requires two parents.
Methods of Asexual Reproduction
Reproduction in which only one parent organism reproduces itself
1 Meiosis.
Give two examples of asexual reproduction in many-celled organisms.
Mitosis vs. Meiosis.
Reproduction: Mitosis and Meiosis
Reproduction: Mitosis and Meiosis
Reproduction of Organisms
Reproduction: Mitosis and Meiosis
Notes on mitosis & Meiosis
Reproduction Introduction
Meiosis.
Reproduction and Development
Reproduction: Mitosis and Meiosis
Reproduction: Mitosis and Meiosis
Sexual vs. Asexual Reproduction
Sexual and Asexual Reproduction.
Mitosis and Meiosis.
Cellular Reproduction
Asexual vs Sexual Reproduction
Asexual & Sexual Reproduction
Cell Division.
Reproduction: Mitosis and Meiosis
Asexual and Sexual Reproduction
Sexual Reproduction.
Cellular Reproduction
Reproduction.
KEY CONCEPT Many organisms reproduce by cell division.
Asexual Reproduction Type of reproduction by which offspring arise from a single organism. Produced by mitosis. Offspring inherit the genes of only.
Reproduction Study Pack #5.
Reproduction.
Presentation transcript:

Sexual vs. Asexual Reproduction Mitosis & Meiosis

Essential Questions What is the difference between sexual and asexual reproduction? (Mitosis & Meiosis) What is the difference between sexual and asexual reproduction? (Mitosis & Meiosis) What types of organisms produce sexually? Asexually? What types of organisms produce sexually? Asexually? What are the advantages and disadvantages to each type of reproduction? What are the advantages and disadvantages to each type of reproduction?

Mitosis Mitosis is used for: Mitosis is used for: Growth Growth Cell Replacement Cell Replacement Regeneration Regeneration Asexual Reproduction Asexual Reproduction

Mitosis The process of mitosis occurs when a cell copies its genetic information once and then divides once. The process of mitosis occurs when a cell copies its genetic information once and then divides once. For example: When human skin cell undergo mitosis they start with 46 chromosomes, those chromosomes make a copy of themselves, then the cell divides, giving each of the new cells a copy. For example: When human skin cell undergo mitosis they start with 46 chromosomes, those chromosomes make a copy of themselves, then the cell divides, giving each of the new cells a copy. The result is two identical cells with 46 chromosomes each. The result is two identical cells with 46 chromosomes each.

Some animals reproduce by mitosis. Asexual Reproduction

Hydra (Budding) The hydra is a tiny water animal that usually begins life as a bud that grows on the body of its parent. When fully developed, the young hydra detaches itself and lives independently.

Bacteria (Fission) Streptococcus Anthrax Escherichia coli (E.coli)

Planaria (Regeneration) Planarians normally reproduce by pulling in two. The fragments then regenerate their missing parts.

Sea Stars

Strawberries (tubers) Houseplants (cuttings)

Advantages or Disadvantage? Only one parent is needed so the organism can reproduce at anytime. Only one parent is needed so the organism can reproduce at anytime. Because there is only one “parent” there is no genetic variation. The “child” is an exact duplicate. Because there is only one “parent” there is no genetic variation. The “child” is an exact duplicate.

Sexual Reproduction This occurs when two parent cells come together to form a new organism (zygote). This occurs when two parent cells come together to form a new organism (zygote). The parent cells often called sex cells (eggs and sperm) are formed in a process called meiosis. The parent cells often called sex cells (eggs and sperm) are formed in a process called meiosis.

Meiosis When meiosis occurs the genetic information is copied once and the cell divides twice. Each new gamete cell contains only one-half of the number of chromosomes of the parent cell. In humans the result is 4 sex cells each with 23 chromosomes rather than the usual 46.

Sexual Reproduction When the egg and the sperm unite they form a new organism called a zygote. When the egg and the sperm unite they form a new organism called a zygote. In humans the offspring inherits 23 chromosomes from the mother and 23 chromosomes from the father thus giving them a full set of 46 chromosomes. In humans the offspring inherits 23 chromosomes from the mother and 23 chromosomes from the father thus giving them a full set of 46 chromosomes. The offspring therefore has characteristics of both parents. The offspring therefore has characteristics of both parents.

Advantage or Disadvantage? Sexual reproduction results in greater genetic variation. Sexual reproduction results in greater genetic variation. Genetic variation is very beneficial in the process of natural selection. Genetic variation is very beneficial in the process of natural selection. Sexual reproduction does require two parents. Sexual reproduction does require two parents.

Organisms that reproduce Sexually LionsDogsRabbitsMosquitoesSunflowersSalmonPeople

How many organisms are needed for asexual reproduction? 1

What is the end result of mitosis? 2 identical daughter cells

What are the different uses for mitosis? New cells, growth and development, reproduction

What are some examples of organisms that reproduce asexually?

How many times is the genetic information copied in Meiosis? 1

How many times does the cell divide in meiosis? 2

What is the end result of Meiosis? 4 cells with half as many chromosomes.

Once the sperm fertilizes the egg in a human how many chromosomes are present in the zygote? 23+23=46

After fertilization what process allows the zygote to grow into a baby? Mitosis