Real Life Genetics

•  http://ib.berkeley.edu/courses/ib162/Week3a.htm

 The assumptions that you must make is that you need to see the genptype of the recessive allele by observing the phenotype of its offspring with the dominant allele.

 You can determine the genotype of an agouti cat by the dominant agouti allele.

 They prefer to work with codominant genes because the homozygous genotype reduces pigment expression across most of the animal.

Develop a table describing the possible genotypes and their phenotypes that could result from a cross between a tortoiseshell and a black cat. Assume both cats are homozygous BB.

 The effect that a striped coat might have on the fitness of a wild cat is that it creates a blotched or bulls-eyed pattern which can cause lack of fitness.

 Yes because white is the dominant phenotype and the other traits are still there but are hidden.

• http://www.stat.ucla.edu/cases/ did mendel fudge his data

 The chance of agreement is between his genetic theory and outcome of his experiments was much too close for comfort.

I conclude that if he did it didn't make a difference in his results because smooth still dominated wrinkled.

 

• http://www.biology.arizona.edu/human_bio/problem_sets/blood_types/Intro.html

1. Is a type O possible in this situation? Yes, because since there's 3 different alleles it is possible to have a type O, it just will be recessive.
2. Possible blood types of offspring The possible bloodtypes of offsprings are A, AB, B and O.
3. What blood type would the father be? The father would be AB.
4. What are the potential blood types of the father of my son? The potential blood types are A or B.
5. Who is NOT the father of my grandson?  The person who has the BO bloodtype.
6. Do we all have the same biological father? No

• Read three other student’s blog posts to these activities. You must comment with a positive and a constructive response. Positively comment on something they did well and constructively comment on something they could do better the next time. Check the list of student blog links if you need help finding someone’s blog. You may post comments on someone’s blog from your class or another class as long as it is the correct blog entry

What factors determine allele frequency? Is a dominant allele always the most frequent allele at a locus? The factors that determine allele frequency are Rh+ and Rh-. The dominant allele is not always the frequency allele at a locus.

Manx cats have no tail and relatively long rear legs. What is the genotype of a Manx cat?The genotype of a Manx cat is Ll. Do you expect the frequency of Manx cats to increase over time? Why or why not? Yes beacuase if they still have no tail and long rear legs those are the dominant traits and you will most likely see those than the recessive having a tail and short legs.