Question 19 An allele that can cause a maladaptive genetic condition (like Sickle Cell) often is retained in a population when having only one of the maladaptive alleles in the genotype helps protect people against a deadly disease. This is an example of polymerase chain reaction auto-immune deficiency kin selection heterozygous advantage Question 20 Lactose tolerance can be prevented by giving young children lots of cow's milk to drink means agreeing to tolerate the social rules in the Lactose community in adults is a result of natural selection in regions where the condition was beneficial is no longer practiced as a belief system anywhere in the world today
Added by Jessica B.
Close
Step 1
** Show more…
Show all steps
Your feedback will help us improve your experience
Bryan Valdivia and 61 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
3) Heterozygote advantage allows some mutated alleles that cause medical disorders to persist in the human population. For example, individuals with one copy of the sickle cell allele are more resistant to Malaria, Cystic Fibrosis, Hemophilia, and Phenylketonuria.
Adi S.
In Sickle Cell Anemia a single gene effects more than one trait in the affected individual (i.e. blood cell shape and spleen function). This is an example of Multiple Alleles Dominance Pleiotropy Epistasis
Joanna Q.
Pleiotropy (a concept presented in Chapter 14 ) occurs when a mutation in one gene results in many different phenotypes. Pleiotropy (a concept presented in Chapter 14 ) occurs when a mutation in one gene results in many different phenotypes. In a study of a gene interaction network, similar to the protein interaction network shown in Figure 21.13 , which type of gene would you predict to exhibit the greatest degree of pleiotropy when mutated? a. a gene that interacts with one neighbor b. a gene that has a duplicate copy c. a gene that is the center of interactions with functionally related genes d. a gene that is the center of interactions with genes of many different functions
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD