Wake-up (Presentation Mode) 1.What type of cells are produced in meiosis? 2.Brown eyes is dominant to blue eyes. A blue eyed woman marries a man who is a carrier. They want to have blue eyed children. How much of a chance do they have of that happening?
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Wake-up (Presentation Mode) 1.What type of cells are produced in meiosis? 1.Brown eyes is dominant to blue eyes. A blue eyed woman marries a man who is.
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Wake-up (Presentation Mode)
1. What type of cells are produced in meiosis?
2. Brown eyes is dominant to blue eyes. A blue eyed woman marries a man who is a carrier. They want to have blue eyed children. How much of a chance do they have of that happening?
Wake-up #2Brown eyes (B) is dominant to blue eyes (b). A blue eyed woman marries a man who is a carrier. They want to have blue eyed children. How much of a chance do they have of
that happening?
Bb x bbb b
B
b
Bb Bb
bb bb
50% chance
Karyotypes
Christopherson
Human Genetics: Karyotypes
46 TOTAL
23 homologous
pairs
46 TOTAL
23 homologous
pairs
Sex Chromosomes
• 2 sex chromosomes• Typical Female = XX• Typical Male = XY
Autosomes
Autosomes: Any
chromosome that’s not a sex chromosome
•44 Autosomes•22 pairs of Autosomes
What is a Karyotype?Number and appearance of chromosome set
Understanding a KaryotypeHomologous pairs
Sex Chromosomes
Autosomes
How to Read a Karyotype1. Look for homologous pairs in autosomes
How to Read a Karyotype2. Check for 2 sex chromosomes