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Heredity Test I Outline

 

Review and define the following terms.  Make sure you can name examples when appropriate.

 

¥   Heredity

¥   Genes

¥   Traits

¥   Probability

¥   Gregor Mendel

     Reginald Punnett

¥   Karl Correns

¥   Multiple alleles

¥   Incomplete dominance

¥   Codominance

 

              * How can you tell these two apart?

 

¥   Genotype (letters)

¥   Phenotypes(physical appearance)

¥   Dominant(stronger) (CAPITAL LETTER)

¥   Recessive (weaker) (lower case)

 

¥   Heterozygous(different)

¥   Homozygous (same)

¥   Cross-pollination

¥   Self – pollination

¥   Parts of the flower

 

 

¥   Practice making Punnett Squares

 

     To decide what letters (genotype) you are going to use remember our class discussion.

          ¥   If you have two choices (phenotype) then choose one letter, a capital and recessive.

          ¥   If you have three (phenotype) then choose two different capital letters.

          ¥   To analyze data, remember there a four parts. There are two ways to analyze data:

  1.  Think of fractions (part/whole). You will need to find how many of the squares share the same data, then put it over 4.
  2.  You can use percentages the whole square will equal 100%. Each square equals 25%, to find the total percentage add the squares.  

 

 

 

 

 

¥   Review the Principles of Genetics

     ¥   Traits, or characteristics, are passed on from one generation of organisms to the next generation.

     ¥   The traits of an organism are controlled by genes.

     ¥   Organisms inherit genes in pairs, one pair from each parent.

     ¥   Some genes are dominant, whereas other genes are recessive.

     ¥   Dominant genes hide recessive genes when both are inherited by an organism.

     ¥   Some genes are neither dominant nor recessive.  These genes show incomplete dominance.

 

Review and define the following terms:

 

  • Mitosis, Meiosis - What type of cells are made?  What are the steps?  How would you recognize each?  What are your key words?

 

  • X,Y Chromosome

 

 

 

Make sure you can:

 

Draw a cell going through mitosis.

            How many chromosomes will you end up with if you start with 46?

 

 

 

 

Draw a cell going through meiosis.

            How many chromosomes will you end up with if you start with 46? 

            What kind of cells are these?