Genetics Review                                                                               name__________________________

1. Explain the difference between a set of alleles that is homozygous and a set that is heterozygous.  Also give examples of each.

2. Explain the difference between dominant traits and recessive traits.

3. What is the difference between genotype and phenotype.

For the following monohybrid crosses, show a punnet square, the percent of each type of genotype, and the percent of each type of phenotype.

4.  Gg x gg         G=Green    g= yellow                                           5.  TT x Tt                  T = Tall      t=short

Genotype=                                                                                         Genotype=

Phenotype=                                                                                        Phenotype=

6. Show how you would do the following dihybrid cross.     TtGg x TtGg

First what are the 4 possible sets of alleles that you can get to put on to your punnet square?

Draw the punnet square and fill in the boxes

List all possible genotypes and numbers of each

List all phenotypes and numbers of each

1. Write out any two letters that would be homozygous recessive _______________.

2. Write out any two letters that would be heterozygous  __________________.

3. Write out any two letters that would be homozygous dominant _________________.

Show the cross of TT x tt  , then show the cross of those offspring.  And label the P generation, F1 generation, and F2 generation.

What are the 4 stages of mitosis?

What is the special part of meiosis?  Explain it and when it takes place.

What is a subunit of DNA called and what three parts make it up?

What are the 4 bases of DNA (show them in pairs), and what are the 4 bases of RNA (in pairs)

What is the difference between translation and transcription?

Use the following letters to answer the following.

ATA GAA TCG GGT

1.     What is the complimentary DNA strand.

2.     What is the complimentary RNA strand (from the original DNA).

3.     What amino acids would be formed from this?