| Mitosis and Meiosis | Genetics | Punnett Square | Sex-linked Traits | Pedigree Analysis |
| 10 | 10 | 10 | 10 | 10 |
| 20 | 20 | 20 | 20 | 20 |
| 30 | 30 | 30 | 30 | 30 |
| 40 | 40 | 40 | 40 | 40 |
| 50 | 50 | 50 | 50 | 50 |
| Final Question | ||||
What does the diploid number mean and which cells are diploid?
What does the diploid number mean and which cells are diploid?
The diploid number is the number of chromosomes in a cell with two sets of chromosomes; has two sets of each gene; present in body cells (somatic cells)
What does the haploid number mean and which cells are haploid?
What does the haploid number mean and which cells are haploid?
The haploid number is the number of chromosomes in a cell with a single set of chromosomes; present in gametes (sex cells) only; half of the diploid number.
What do the terms heterozygous and homozygous mean?
What do the terms heterozygous and homozygous mean?
Heterozygous means the individual is a hybrid, or that they are carrying a dominant and recessive allele.
A heterozygote may also be called a "carrier" since they carry an allele that is not shown.
Homozygous means that they have two of the same allele, both dominant or both recessive.
Cross a heterozygous blue eyed female with a homozygous brown-eyed male. Brown is dominant to blue. List the possible genotypes and their percentages. List the possible phenotypes and their percentages.
Cross a heterozygous blue eyed female with a homozygous brown-eyed male. Brown is dominant to blue. List the possible genotypes and their percentages. List the possible phenotypes and their percentages.
Genotypes: Bb, BB
Phenotypes: 0% blue; 100% brown
Huntington's Disease is caused by a dominant allele (H). What is the likelihood of the children having this disorder if both parents are heterozygous? List the genotypes.
Huntington's Disease is caused by a dominant allele (H). What is the likelihood of the children having this disorder if both parents are heterozygous? List the genotypes.
75%. Hh, HH, hh
Why does the "Y" allele for males not need an "exponent"?
Why does the "Y" allele for males not need an "exponent"?
Y chromosomes do not usually carry sex linked genes.
If a male child has the allele for baldness, a sex-linked trait, which parent did he inherit the allele for baldness from?
If a male child has the allele for baldness, a sex-linked trait, which parent did he inherit the allele for baldness from?
His mother, (X chromosome with the recessive allele)
If a bald man has a child with a woman that does not carry the baldness allele, what are the chances that their child will be bald? List all possible genotypes.
If a bald man has a child with a woman that does not carry the baldness allele, what are the chances that their child will be bald? List all possible genotypes.
0% for all children; 100% of females will be carriers; and none of the males will carry the trait or show the trait. XBXb, XBY
What do the different shapes in a pedigree analysis represent?
What do the different shapes in a pedigree analysis represent?
Squares are males and circles are females
When looking at a pedigree analysis, how do you determine if someone is a carrier?
When looking at a pedigree analysis, how do you determine if someone is a carrier?
A carrier is someone who has one recessive allele. You would need to look at their parents and/or their offspring. If any of their offpsring show a recessive trait then you know each of the parents must carry the allele even if they don't show it.
A carrier is also heterozygous for that trait.
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