Presentation on theme: "200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 Genetics Stuff. Even More Genetics Stuff Yet More Genetics."— Presentation transcript:
200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 Genetics Stuff. Even More Genetics Stuff Yet More Genetics Stuff. Still, Yet, Even More Genetics Stuff Astrophysics… Ummm…actually it’s More Genetics Stuff
What do skin color, hair color, and eye color have in common?
They are multiple genes traits (they’re determined by MULTIPLE genes).
How are mitosis and meiosis similar? How are they different?
Mitosis 1.Asexual 2.Body cells (occurs in all organisms) 3.Prophase, metaphase, anaphase, telophase 4.Results in two daughter cells. 5.New cells have normal number of chromosomes (2N-diploid) 6.New cells fully functional Meiosis 1.Sexual 2.Gametes (animals and plants) 3.Prophase, metaphase, anaphase, telophase…twice! 4.Results in four daughter cells. 5.New cells w/ ½ normal number of chromosomes (N-haploid). 6.New cells need to combine with another gamete before they’re fully functional.
Using bacteria to produce human insulin is an example of______?
What is the difference between incomplete dominance and co- dominance?
Incomplete Dominance: R=Red flowers, r=white flowers Rr=pink flowers rather than red. Co-dominance: R=Red flowers, r=white flowers Rr=flowers with patches of red and patches of white.
What is the difference between inbreeding and hybridization?
Inbreeding: crossing two individuals with identical or similar alleles to produce specific traits. This can increase the chance of inheriting genetic disorders Hybridization: crossing two individuals with different traits, so offspring might get the best traits of both. Used in agriculture.
Homozygous means two of the same alleles. Heterozygous means one recessive and one dominant allele.
What is the difference between a genotype and a phenotype?
Phenotype = the physical (sometimes) visible traits of an organism (example: blue eyes, type AB blood). Genotype = the genetic make-up of an organism…its chromosomes (example: Bb, BB, bb).
Explain the relationship among DNA, chromatin, chromosomes, genes, alleles, and traits.
DNA is the molecule that codes for heredity. Normally it is in the form of chromatin, but during cell division it forms structures called chromosomes. A gene is a specific part of a chromosome that is responsible for a certain trait. Alleles are the various forms of expression for a given trait.
If a heterozygous parent is crossed with another heterozygous parent, what is the probability that the offspring will be homozygous recessive?
Genes are passed from parents to offspring on chromosomes.
What is a pedigree? What do the various shapes and shading on a pedigree represent?
A pedigree is a chart that shows how traits are passed from one generation to another. Open Circle = Normal Female Half-shaded Circle=Carrier Female Shaded Circle=Affected Female Open Square = Normal Male Half-shaded Square =Carrier Male Shaded Square =Affected Male
If you have the A and B alleles for blood type, what type blood do you have?