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Entries posted on “February, 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, [...]
February 28th, 2009 | Posted in Blog | Read More »

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?
February 28th, 2009 | Posted in Blog | Read More »

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?
February 28th, 2009 | Posted in Blog | Read More »

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
February 28th, 2009 | Posted in Blog | Read More »

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 [...]
February 28th, 2009 | Posted in Blog | Read More »

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 [...]
February 28th, 2009 | Posted in Blog | Read More »

Identify the genotypes of the following allele combinations:
TT
Tt
tt
Could GF be a possible allele combination? Why or why not?
February 28th, 2009 | Posted in Blog | Read More »

Why is the punnett square important in expressing the proability of offspring chances? Do you completely understand how to cross genes or alleles?
February 28th, 2009 | Posted in Blog | Read More »

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?
February 28th, 2009 | Posted in Blog | Read More »

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 [...]
February 24th, 2009 | Posted in Biology News | Read More »