Test Essay Questions
February 28, 2009
What did Mendel do that made his predictions so accurate?
You are looking at the first generation tall plants from Mendels study. What are their genotypes and phenotypes?
What are the possble blood types of a person with O and AB blood?
Parents with children with the genetic disorder cystic fibrosis often spend time beating on their backs, why is this?
Saturday Blog March 7th
February 28, 2009
A family has 4 children and a boy and a girl are color-blind. Are the parents colorblind? Explain. Is it more common for a boy or a girl to be colorblind?
Friday Blog March 6th
February 28, 2009
Chromatin coils into making ______________. And chromosomes ahve genes on them that determine the genetic makeup of an individual. How many chromosomes do each body cell have? How many chromosomes do each sex cell have? How many alleles are passed from parent to offspring for one trait?
Thursday March 5th
February 28, 2009
If you have the alleles xx, what gender are you? What is your gender type—what are your gender alleles? Don’t mess this question up——ha
Wednesday March 4th
February 28, 2009
Incomplete dominance means that an intermediate form is expressed in the offspring. Research this term and explain based on your understanding of the term. There are multiple alleles that work together to control some traits. name some of those traits that are controlled by multiple alleles. Polygenic inheritance means that a groups of alleles are working together. What do you think that this statement means?
Blog Tuesday March 3rd
February 28, 2009
A pedigree is a tool used in Genetics to trace a trait through a family. What do squares represent? What do circles represent? if the square of circle is half shaded, whould the person have the disease or just be a carrier of the trait? How would the circle or square look if the person had the disease?
Blog Monday March 2nd
February 28, 2009
Identify the genotypes of the following allele combinations:
TT
Tt
tt
Could GF be a possible allele combination? Why or why not?
Blog Sunday March 1
February 28, 2009
Why is the punnett square important in expressing the proability of offspring chances? Do you completely understand how to cross genes or alleles?
Blog Saturday 2/28
February 28, 2009
What do you think is the difference between faternal and identical twins? Do you think that identical twins have the same DNA in the cells nucleus? Is the DNA the same in the mitochondria?
New Lab Evidence Suggests Preventive Effect Of Herbal Supplement In Prostate Cancer
February 24, 2009
DHEA is a natural circulating hormone and the body’s production of it decreases with age. Men take DHEA as an over-the-counter supplement because it has been suggested that DHEA can reverse aging or have anabolic effects since it can be metabolized in the body to androgens. Increased consumption of dietary isoflavones is associated with a decreased risk of prostate cancer.
Red clover (Trifolium pretense) is one source of isoflavones. Both supplements may have hormonal effects in the prostate and little is known about the safety of these supplements.
In a recent report in Cancer Prevention Research, a journal of the American Association for Cancer Research, researchers report that DHEA levels can be manipulated in cells in the laboratory to understand its effects.
Julia Arnold, Ph.D., a staff scientist at the National Center for Complementary and Alternative Medicine (NCCAM) at the National Institutes of Health, said more research is necessary in an environment where men and women concerned about health problems tend to self-prescribe based on information they find on the Internet.
