Exam IV Review
Supplemental Instruction
Iowa State University / Leader: / Maura
Course: / Bio211
Instructor: / Dr. Biederman
Date: / 3/20/17

CH. 16 Mendelian Genetics

1.Give an example of a trait, gene/allele

2.List the three important choices Mendel made that helped lead to his conclusions

3.True or False:

If a trait is dominant, it is more commonly seen in the phenotype of that species.

4.Provide an example for each of the following terms: Phenotype, Genotype, Homozygous, Heterozygous

5.How many traits is a monohybrid evaluating vs. a dihybrid?

6.What is the conclusion for Mendel’s law of independent assortment?

7.Can the relationship between phenotype and genotype get more complicate than dominant and recessive? If so, how is it more complicated?

8.What does the location of the genes on a chromosomes have to do with how they are assorted?

9.What two factors are the chromosomal basis of Mendel’s Laws? List and define them

Practice Punnett Squares

1.Straight hair is dominant and curly hair is recessive.

  1. Diagram a Punnett Square for 2 heterozygous parents.
  1. What is the parents’ genotype(s)?
  2. What is the parents’ phenotypes(s)?
  3. What is the genotypic ratio for the offspring?
  4. What is the probability of producing a curly-haired child? (In percent)

2.White-spotted beetles are dominant over solid colored beetles. A heterozygous male is crossed with a solid colored female.

  1. What is the mother’s genotype?
  2. What is the father’s genotype?
  3. Diagram a Punnett Square for this cross.
  1. What is the genotypic ratio?
  2. What is the phenotypic ratio?
  3. What is the probability of producing a spotted beetle?

3.Dihybrid Cross

Rough Coat: R

Smooth Coat: r

Black Fur: B

White fur: b

You have two grandparent guinea pigs. One that is homozygous dominant and the other with homozygous recessive. What will their offsprings genotype and phenotype be. Draw a punnet square

Now complete a punnet square to figure out the F2 progeny. Provide the phenotypic ratio.

CH. 13 & 14 Mitosis and Meiosis

1.What is the most important thing that occurs during s phase? Are chromosomes condensed or uncondensed how do you know this?

2.What causes cancer when thinking about the cell cycle?

3.What are some of the main differences between mitosis and meiosis?

4.Draw out the process of mitosis and explain what is happening in each phase

5.What makes offspring similar to their parents in meiosis?

6.What makes offspring different from their parents in meiosis?

7.Draw out the process of meiosis and what occurs at each phase. Which part of meiosis is similar to mitosis? (Meiosis I or II) Why do you say this?

8.Which of the following occur only in meiosis

Division of the cell AND nucleus

Formation of a synapsis

Formation of a chiasma

DNA synthesis

Two nuclear divisions

Occurs with condensed chromosomes

Splitting of homologs

Splitting of sister chromatids

No change in the ploidy level of the cell

9.Independent assortment is a way to increase genetic variance- how does it do this?

10.True or False:

There are more chromosomes in a cell than there are genes in a cell?