I.D.O.L.- Week 5 Course Development Project (CDP)

Utilizing Media and Media Materials

Lecturer: Dr. Che Joplin

Objective

• Design and develop a PowerPoint presentation to support the lecture you have scripted for one or more CDP learning objectives

• The presentation must be 3-5 minutes in length• Utilize a Creative Commons slide (Properly site

the use of slide---copy right purposes)• Create a PDF document file of your script to be

presented with your slide share presentation

WE WILL DISCUSS THE GREGOR MENDEL’S 1ST LAW OF INHERITANCE: MENDEL’S LAW OF SEGREGATION

CDP Learning objective:

By definition:

Mendel experiments were able to determine four facts that define his Law of Segregation:1. Each organism contains two factors for each

trait.2. Factors segregate in the formation of gametes.3. Each gamete contains one factor for each trait.4. Fertilization gives each new individual two

factors for each trait.

Fact #1. Each organism contains two factors for each trait.

• Each trait is called an allele. • Each allele is at a specific location (locus) on the

gene• There are two chromosomes for each allele of the

same genes (called Homologous chromosomes)--- one chromosome come from each parent, a male and female of the same species

• The Alleles (Traits) on each of these chromosomes can be the same, alternates (opposite) or mutated (which will expresses a completely different trait)

• Each of the homologous chromosomes will replicate creating sister chromotids

• Each sister chromotid will be exactly identical to one another

2. Factors segregate in the formation of gametes.

• Each sister chromotid will separate in the formation of gametes; egg/ovum or Sperm/spermatid

• Each gamete will have one-half of the genetic material needed for expression of a specific allele.

• (Several variations of these gametes are produced through a processes called Crossing-over and Independent Assortment---allowing each gamete to express a difference of the same trait)

3. Each gamete contains one factor for each trait.

4. Fertilization gives each new individual two factors for each trait.

• Each sperm and/or egg will possess one half of all of the factors needed to express a specific alleles (traits).

• When the egg and the sperm fuse together to form a zygote (offspring) the offspring will have two factors for each trait.