Symbols
Generations
Figuring out genotypes
Other Science Things
100

What does a square symbolize?

A male

100

Circle the people who are part of generation II

The whole second line

100

What is the genotype of II-3? Use letters A and a. 

aa

100

Write a homozygous genotype and a heterozygous genotype using letters b and B.

BB and Bb

200

What does a circle symbolize if it's shaded?

A female who has the trait

200

Circle who is generation II, individual 1 (or II-1)

Second line, first individual
200

What are the 2 possible genotypes for I-1?

AA or Aa

200

What is the main difference between dominant and recessive traits

Dominant = only need one allele

Recessive = need two alleles

300

What does a line between a square and a circle mean?

Marriage or "mated"

300

Circle III-3 and I - 1

Third line, third person; first line, first person
300

What are the genotypes of III-1 and III-2? (hint: look at their phenotypes and the phenotypes of their children!)

Aa and Aa

300

Parents pass on how many alleles?

1 from each, each individual gets 2

400

If there is a line that goes from two connected individuals and branches to three separate individuals underneath, this represents...

The children of the parents

400

Circle III-2, II-1, and I-2

Check with teacher

400

Is it possible to figure out the genotype of II-4? If so, figure it out. If not, say "not possible"

Not possible - there are two possible genotypes. Can't tell from the children. 

400

Two parents are heterozygous for a trait. Using the letters A, what is the percent chance the child will have the homozygous dominant genotype?

25%

500
Explain what this pedigree means (i.e. how many generations, how many children, does anyone have the trait, etc.)
Two parents, the mother has the trait, had three kids, a brother and sister have the trait. The unaffected brother had three children with a woman, the child and that mother have the trait.
500

Label the entire diagram

(check with teacher)

500

Is it possible to know the genotypes of first generation. If so, figure it out. If not, write "not possible".

Aa and Aa

500

What are the 4 stages of mitosis, and what are the main events that happen in each?

prophase, metaphase, anaphase, telophase, 

-check with teacher

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