1 / 12

Mendel/ Punnett Squares/ Genetics Review

Mendel/ Punnett Squares/ Genetics Review. 7 th Grade Content Standard 11. Genetics Review. Journal: Who was Gregor Mendel? What title do we give him today? Why? Who was Reginald Punnett? What did he invent? How does it work?. Genetics Review. Objectives:

horace
Download Presentation

Mendel/ Punnett Squares/ Genetics Review

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Mendel/ Punnett Squares/ Genetics Review 7th Grade Content Standard 11

  2. Genetics Review Journal: Who was Gregor Mendel? What title do we give him today? Why? Who was Reginald Punnett? What did he invent? How does it work?

  3. Genetics Review Objectives: Know and apply the Law of Dominance Know and apply the Law of Segregation Know and apply the Law of Independent Assortment Define homozygous, heterozygous, genotype, phenotype, and alleles.

  4. Genetics Review Mendel’s Laws • Mendel's First Law is the law of "Segregation of Characteristics.“ • This says that of a pair of characteristics (e.g. blue and brown eye color) only one can be represented in a gamete. What he meant was that for any pair of characteristics there is only one gene in a gamete even though there are two genes in ordinary cells. •   If your eyes are blue, green or grey you have two alleles for blue eyes (bb), then your gametes must have a blue allele (b); if your eyes are brown you might have two brown allele (BB), then your gametes have one allele for brown (B) or you might have one allele of each kind (Bb), in which case you make two kinds of gametes some contain the brown allele (B) and some contain the blue allele (b).

  5. Genetics Review • Mendel's Second Law is the law of "Independent Assortment". This says that for two characteristics the genes are inherited independently. • If you had the genotype AaBb you would make four kinds of gametes: they would contain the combinations of either AB, Ab, aB or ab. • Suppose one of your parents had the genotype AABB then you would have inherited AB from this parent. Suppose also that your other parent had the genotype aabb then you would have inherited ab from this parent. The combinations of AB and ab are parental types. Your genotype is AaBb and some of your children will inherit these parental types either AB or ab from you. However, it is also possible for some of your children to inherit new combinations called "re-combinants from you. These are Ab and aB.

  6. Genetics Review

  7. Genetics Review

  8. Genetics Review

  9. Genetics Review

  10. Genetics Review

  11. Genetics Review

  12. Genetics Review Worksheet

More Related