1. Standard 1B: Genetics Ms. Darlak
Biology B Week 3
Standard 1B: Genetics
Ms. Darlak

2. Warm-up 12/19 WW ww Ww ww Ww ww ww Ww ww Ww Ww Ww
What is the genotype for individual #12, if individual #1 is WW.
Is this showing a dominant or recessive trait?

3. Agenda 12/19
Questions?
Standard 1B
2B Clicker Pretest

4. Warm-up 12/15
Does the following pedigree show a dominant or recessive trait? How do you know?
Is the trait carried on an autosomal or sex chromosome?

5. Warm-up 12/15 Recessive Sex-chromosome
Who are carriers, give to sons only?

6. Agenda 12/15 Quiz II Multiple Alleles & Sex linked traits
Thacker Family Pedigree pp
Mixed Genetics Review p.25
Due Wednesday
STANDARD 1B FRIDAY!

7. Thacker Family Pedigree
Some people are born with extra fingers or toes.
This condition, known as polydactyly, is rare.
Family Story pps
Construct a Pedigree for whole family on p.24
Include Names
Genotypes 7 7 7

8. Classwork/Homework Thacker Family Pedigree pp.22-24
Mixed Genetics Review p.25
On separate piece of paper.
SHOW ALL WORK!

9. Bio Warm-up 12/16
In northeast Kansas there is a creature known as a wildcat. It comes in three colors, blue, red, and purple. A homozygous individual is blue, a homozygous individual is red, and a heterozygous individual is purple.
What would the genotypes and phenotypes of the offspring be if a blue wildcat was crossed with a red one?
What Mode of Inheritance is this?  

10. Answer: R BR B= Blue, R= Red, BR= Purple BB (blue) x RR (red).
Genotypes:
100% BR
Phenotypes:
100% Purple
Incomplete Dominance, two phenotypes produce a BLEND or intermediate (remember white + red = pink)

11. Agenda 12/16 Quiz Pass Back Thacker Family Pedigree Check
Mixed Genetics Review p. 25 DUE 12/17
On separate piece of paper.
SHOW ALL WORK!
Standard Questions Review (GROUP)
Due Thursday
Pedigree Quiz Wednesday
STANDARD 1B FRIDAY!

12. Most common missed question.
50% Female carrier
50% Female no trait
50% Male has trait
50% Male no trait
25% Offspring
Have trait

13. Warm-up 12/17 Draw a pedigree to depict the following family:
One couple has a son and a daughter with normal pigmentation. Another couple has one son and two daughters with normal pigmentation. The daughter from the first couple has three children with the son of the second couple. Their son and one daughter have albinism; their other daughter has normal pigmentation.

14. Answer

15. Agenda 12/17 Thacker Family Check Pedigree Quiz
Mixed Genetics Problems Due
Standard Questions Review
Due Thursday Tomorrow!
1B Review Chart
STANDARD 1B FRIDAY!

16. Thacker Family Pedigree p. 24Zz zz Zz zz Zz zz zz zz zz Zz Zz zz zz Zz zz zz zz zz zz zz zz Zz Zz
Polydactyl = Z
Dominant Trait

17. Mixed Genetics Problems
Answer Key on Class Website

18. Group Review
Define the terms homozygous and heterozygous. Give examples.
What are dominant and recessive alleles? Give examples.
Define the terms genotype and phenotype. Give examples.
Describe four inheritance patterns besides simple dominance.
Give an explanation of each.
Create a visual example for each.
What is the difference between incomplete dominance and codominance? Give a visual example to show the difference.
Construct 5 genetics problems, one for each of the five modes of inheritance.
For each question, create a scenario describing the phenotypes of the individuals, or other required information to compete the problem.
Ask a specific question in each problem.
Your problem must have an answer key that includes all work. Punnett square, genotypic and phenotypic ratios.
Create a recessive or dominant pedigree, with at least 10 individuals; this will be the answer key. Give verbal information for all of the individuals, so that a classmate could construct the same pedigree that you made.

19. Warm-up 12/18
A human female "carrier" who is heterozygous for the recessive, sex-linked trait causing red-green color blindness marries a male who is not colorblind. What proportion of their male progeny will have red-green color blindness?

20. Sex-linked Answer: XN Y XNXN XNY Xn XNXn XnY XN XN – normal
Xn – colorblind
Male = XNY
Female = XNXn
Genotypes:
25% XNY
25% XnY
25% XNXn
25% XNXN
Phenotypes:
MALES: 50% normal, 50% colorblind
FEMALES: 100% normal
Answer: 50% of males will be colorblind
XN Y XN Xn
XNXN
XNY
XNXn
XnY

21. Agenda 12/18 Standard Questions Review (Group)
Due Today
1B Review Chart see p. 26
STANDARD 1B TOMORROW!

22. Standard 1B Review
Look over 3 quizzes (3 Modes, Sex-linked & Multi-Alleles, Pedigree)
What did you get wrong?
Do you understand why it was wrong?
Do you need it explained again?
Mixed Genetics Problems p.25 (Many have not done)
#1-11 to meet standard (3)
#12-15 to exceed standard (4 or 5)
Create Questions with answer sheet (use p. 26 to help)
Exchange questions with another person/group.
Check your answers with their answer sheet.
Does question make sense? Does answer make sense?
What is the mode of inheritance?

23. Genetics Bingo PEDIGREE PUNNETT SQUARE AUTOSOME SEX-CHROMOSOME 22 PAIR
IA i
IB i
IA IA
IA IB ii
IA IB x IB IB
IA IB x IB i
XhXh x XHY
RW x RW
ALLELE
GENOTYPE
PHENOTYPE
INCOMPLETE DOMINANCE
CODOMINANCE
SEX-LINKED
MULTI-ALLELIC
SIMPLE DOMINANCE
MENDEL RR RW RB BB WW TT Tt tt
HOMOZYGOUS
HETEROZYGOUS
HOMOZYGOUS RECESSIVE
HOMOZYGOUS DOMINANT 0%
25%
50%
75%
100%