University of North Carolina BIO 101 Patterns of Inheritance II 1)Compare/contrast the terms complete dominance, incomplete dominance and co-dominance and give example of each. Mendel focused on traits that had two alleles (A or a) in which one was dominant and the other was recessive. Yet many genes may have multiple alleles. What is an example in your book of a gene that has multiple alleles? How many alleles are there in this system? How many different genotypes are possible with these alleles? What are they? When one gene influences two or more characters, we call this__________. As an example of pleiotropy, sickle cell disease has many “symptoms” and does what to: Red blood cell shape? Red blood cell count? Blood flow? Kidneys? Whereas pleiotropy describes the multiple traits resulting from a single gene, a polygenic “many gene” trait describes how multiple genes result in a single trait. What is an example of a polygenic trait? Polygenic inheritance can be recognized how? Height

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University of North Carolina BIO 101 Patterns of Inheritance II 1)Compare/contrast the terms complete dominance, incomplete dominance and co-dominance and give example of each

Biology May 01, 2021

University of North Carolina

BIO 101

Patterns of Inheritance II

1)Compare/contrast the terms complete dominance, incomplete dominance and co-dominance and give example of each.

Mendel focused on traits that had two alleles (A or a) in which one was dominant and the other was recessive. Yet many genes may have multiple alleles. What is an example in your book of a gene that has multiple alleles?

How many alleles are there in this system?
How many different genotypes are possible with these alleles? What are they?
When one gene influences two or more characters, we call this__________.

As an example of pleiotropy, sickle cell disease has many “symptoms” and does what to: Red blood cell shape?

Red blood cell count? Blood flow?

Kidneys?

Whereas pleiotropy describes the multiple traits resulting from a single gene, a polygenic “many gene” trait describes how multiple genes result in a single trait. What is an example of a polygenic trait?

Polygenic inheritance can be recognized how?

Height is another polygenic trait, yet one’s height can also be influenced from the environment, how?

Are human traits more heavily influenced by genes or the environment?

Figure 9.16 is really important in showing how meiosis is linked to inheritance. Pretend you have to give a short presentation to a group of students explaining this figure. What would you say

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