Alternative Patterns of Inheritance

• Warm-Up• Objective• Powerpoint• Packet/book work –

what you don’t finish is HW

• Exit Ticket

• Name and describe an example of genetic recombination.

Objective

• Students will demonstrate understanding of the different types of inheritance (co-dominance, sex-linked, incomplete dominance) by independently completing a worksheet.

• By the end of class today, you will be able to identify and describe codominance, incomplete dominance, and sex-linked inheritance

Co-Dominance Incomplete Dominance

Co-Dominance

• There are multiple dominant alleles that are both expressed in the phenotype.

• If there are multiple Dominant alleles, how would you write that? Aa wouldn’t be enough.

Incomplete Dominance

• Neither allele is dominant, so the heterozygote creates a combined phenotype.

• What’s the difference between incomplete dominance and co-dominance?

Sex-linked

• When an allele is on a sex-chromosome.

• Hemophilia is x-linked recessive. What does this mean?

• Why are men more likely to get hemophilia?

Exit Ticket

• Which type of inheritance is demonstrated by the picture? How can you tell.

• 3 sentence limit