Alzheimer's is believed to be caused by a dominant allele, however, it continues to persist in populations, even though it is deleterious.  Explain why the allele for Alzheimer's  persists using an evolutionary justification.

What is concordance? For a polygenic or multifactorial trait such as behavior, why are identical  (monozygous) twins studied? What is the advantage of studying identical twins reared apart?  What  should be the concordance in identical twins raised apart if a trait is purely genetic with no  environmental influence?    What are some genetic conditions or chromosomal abnormalities that cause changes in behavior?For  example, Huntington disease; Fragile X syndrome.   What is schizophrenia and why is it considered multifactorial? What is autism? Major depression?  Bipolar disorder?  What is: the purpose of our immune system? Our first line of defense against infection?  • What are some differences between our innate immune system, and our adaptive immune system?   What is an antigen? An antibody? Which cells make antibodies? What is a memory B cell? How do  vaccines work?   Why must HLA be matched for a successful organ transplant? Why is it difficult to find a good  match?

Briefly explain why Inheritance of acquired characteristics theory is incorrect

The drug tamoxifen has been used to treat some types of breast cancer. Suppose even among female patients with the same tumor grade there is variation in responsiveness to tamoxifen. It is also found that this variation is at least partly genetic; his variation is at least partly genetic; women with a relative who had a low responsiveness to the drug are at higher risk of low responsiveness to the drug The target of tamoxifen is a protein called the estrogen receptor. A. Outline how a “candidate gene approach” could be conducted to investigate whether variation in the gene for estrogen receptor affects tamoxifen responsiveness