biology questions LW
Terms
undefined, object
copy deck
-
You have two sets of genes for different traits for peas.Y or y=color
R or r= skin If the parents genes are
YyRr + YyRr. What kind of ratio will you get. - 9:3:3:1 ratio
- What is a test cross, and what is its purpose?
- A test cross is used to determine the genotype of an individual with the dominant genotype. To do this you cross the individual with the most recessive phenotype.
- What soes it mean to have genes that are homozygous?
- The genotype will contain the same alleles for a trait.(ex. tt, or YY)
- What is the principle of dominance?
- 2 forms of the same gene which are present when the dominant allele is expressed.
- What does it mean when genes are autosomal?
- It means the genes are not sex linked.
- What is Mendle's principle of segregation?
- It means in meiosis two alleles separate so that each gamete recives only one form of the gene.
- Who is Gregor Mendle and what is he famous for?
- Mendle was a monk who studied the traits in peas.
- What is the addition rule for genetics?
- The addition rule is as follows; if two outcome are mutuall exclusive, the probability of either occuring is their sum.
- What is pleiotopy?
- It is a situation where one gene affects more than one phenotype.
- What is sex linkage?
- When a trait is sex linked, it will occur with greater frequency in one gender than the other.