1. Exam #1 F 2/16 in WCH 1.120 (bring cheat sheet)
Review Th 2/15 at 5pm in GRG 102

2. CB 13.5
{Meiosis:
producing gametes}
Sexual reproduction creates genetic diversity by combining DNA from 2 individuals, but also by creating genetically unique gametes.
{Mitosis:
producing more cells}

3. Differences between mitosis and meiosis
CB 13.9
Differences between mitosis and meiosis

4. Asexual
Reproduction
Sexual
Reproduction
vs.
Mitosis only:
extremely low
genetic diversity
Meiosis and Mitosis:
greater genetic
diversity

5. Gene for growth hormone Gene for brown hair pigment Gene for
CB 14.4
Gene for
hemoglobin
Gene for
DNA polymerase
Gene for
blue eye pigment
Haploid
chromosomes

6. Gene for growth hormone Gene for hair color Gene for hemoglobin
CB 14.4
Allele for
low express
(short)
Allele for
black hair
Allele for
sickle cell Hb
Gene for
growth hormone
Gene for
hair color
Gene for
hemoglobin
Diploid
chromosomes
Allele for
high express
(tall)
Allele for
black hair
Allele for
normal Hb

7. CB 13.3
Each pair of chromosomes is comprised of a paternal and maternal chromosome

8. haploid
X 23
in humans
X 23
in humans
diploid
X 23
in humans
Inheritance = The interaction between genes inherited from Mom and Dad.

9. Do parents’ genes/traits blend together in offspring?
CB 14.10
Do parents’ genes/traits blend together in offspring?

10. In many instances there is a unique pattern of inheritance.
CB 14.3
In many instances there is a unique pattern of inheritance.
Traits disappear and reappear in new ratios.

11. CB 14.6
Genotype
Phenotype

12. Gene for growth hormone Gene for hair color Gene for hemoglobin
CB 14.4
Allele for
low express
(short)
Allele for
black hair
Allele for
sickle cell Hb
Gene for
growth hormone
Gene for
hair color
Gene for
hemoglobin
Diploid
chromosomes
Allele for
high express
(tall)
Allele for
black hair
Allele for
normal Hb

13. CB 14.6
Genotype
Phenotype

14. CB tbl 14.2
Human blood types

15. One gene with three alleles controls carbohydrates that are found on Red Blood Cell membranes
RBC A B
RBC
RBC B A B A B A A B B A A B B
Allele O = no carbs
Allele A = A carbs
Allele B = B carbs
CB tbl 14.2

16. Human blood types
CB tbl 14.2

17. We each have two versions of each gene…
RBC A A A So A A A A
Genotype could be
A and A OR
A and O

18. Recessive alleles do not show their phenotype when a dominant allele is present.
RBC A A A A A A A
Genotype could be
A and A OR
A and O

19. What about…
RBC
Genotype = ??

20. What about…
RBC
Genotype = OO

21. What about… A B
RBC B A A B B A A B

22. What about… A B
RBC B A A B B A A B
Genotype = AB

23. Human blood types
CB tbl 14.2
AA or AO
BB or BO AB OO

24. If Frank has B blood type,
his Dad has A blood type,
And his Mom has B blood type…
Should Frank be worried?

25. Mom=B blood
BB or BO
Dad=A blood
AA or AO
possible
genotypes

26. Mom=B blood BB or BO Dad=A blood AA or AO all B / 50% B and 50% O
possible
genotypes
all B / 50% B and
50% O
all A / 50% A and
50% O
Gametes

27. Mom=B blood BB or BO Dad=A blood AA or AO Gametes all B / 50% B and
possible
genotypes
Gametes
all B / 50% B and
50% O
all A / 50% A and
50% O
Frank can be BO
= B blood
…no worries

28. Mom=B blood BB or BO Dad=A blood AA Gametes all B / 50% B and 50% O
Grandparents
AB and AB
Mom=B blood
BB or BO
Dad=A blood AA
possible
genotypes
Gametes
all B / 50% B and
50% O
all A
Frank can be BO or BB
= B blood
…Uh-Oh

29. In many instances there is a unique pattern of inheritance.
CB 14.3
In many instances there is a unique pattern of inheritance.
Traits disappear and reappear in new ratios.

30. haploid
X 23
in humans
X 23
in humans
diploid
X 23
in humans
Inheritance = The interaction between genes inherited from Mom and Dad.

31. Exam #1 F 2/16 in WCH 1.120 (bring cheat sheet)
Review Th 2/15 at 5pm in GRG 102