Class Notes (837,490)
Canada (510,274)
Biology (6,824)
Biology 1001A (1,727)
Dr.Mike (47)
Lecture 11

Lecture 11.docx

4 Pages
76 Views
Unlock Document

Department
Biology
Course
Biology 1001A
Professor
Dr.Mike
Semester
Fall

Description
Lecture 11:  Term Test Sat Oct 27, 2 to 4PM   Outcomes up to this class (10 lectures, 2 labs)  Up to 40 MC questions  Optional Q&A, Wed Oct 24, 5:30PM NCB101  IMPORTANT: WHAT'S THE RELATIONSHIP BETWEEN MENDELIAN GENETICS AND MEIOSIS  Clicker Question   Where are the genes for making a uterus? 2. On X chromosome from her mother 3. On autosomes such as Chr 6 or 14 4. On X chromosomes from her father 5. On mitochondrial chromosomes (only from her mother)  They are on the X chromosome (sex chromosomes) and autosomes  Conversely, boy parts are stored on the Y chromosome and autosomes  Mendel: Think like a scientist in the 1850s   Darwin didn't understand inheritance  Mendel didn't care about evolution and didn't know anything about meiosis, mutations etc. but he still figured out inheritance  People used to believe that inheritance was by "blending" (Progeny are intermediate)   it looked like blending  Blending of characteristics (Ex. tall+short=middle (intermediate))   like mixing paint: mix red and blue paint, you get purple paint  some of the intermediate parents have super tall and super short offsprings (shouldn't happen with blending)  Mendel thought about what happened when you cross 2 medium height people  Polygenic traits shown continuous variation in a population   You can cross intermediates you can get extreme traits back (polygenic)  Inheritance isn't inherited, it is particulate  intermediate is not a blend, its a combination of the two or more alleles  Careful experimentation with controlled crosses and quantitative analysis led to an explanatory model   Variation in traits is due to different alleles  Alleles segregate randomly into gametes   Mendel's first law  Organisms inherit 2 alleles for each trait  Appearance of heterozygotes determined by dominant alleles (Whichever allele determines the phenotype of a heterozygote is the dominant allele)  Punnet square   The gametes in a Punnet square come from meiosis  Product rule is used in the Punnet square  using the product rule   multiply all the possibilities of each individual alleles to determine the possibilities of the offspring  Group on   P on 1 homolog, p on other homologue  after MI both P in a cell and both p in one cell  The P and p separate  After meiosis you get 2 cells with P each and 2 cells with p each  Reciprocal crosses illustrate sex linkage in Drosophila (Genes are
More Less

Related notes for Biology 1001A

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit