Omaritod

Páginas: 2 (413 palabras) Publicado: 19 de enero de 2013
Modeling Mendel´s Laws:
Punnett Square: a graphic used to predict the results of a genetic cross.
Probability: the likelihood that a specific event will occur; expressed in mathematical terms.Pedigree: a diagram that shows the occurrence of a genetic trait in several generations of a family.
Genetic disorder: an inherited disease or disorder that is caused by a mutation in a gene or by achromosomal defect.
B dominant
B recessive
YY: homozygous dominant
Yy: heterozygous
yy: homozygous recessive
TT * Tt
T T t
T
Phenotype: %
Genotype: %
How can a punnett square be used ingenetics?
R: Show all of the genotypes that could result from a given cross.
How can mathematical probably be used in genetic?
Probability formulas can be used to predict the probabilities thatspecific alleles will be passed on to offspring.
What information does a pedigree shoe?
A pedigree can help answer question about three aspects of inheritance:
Sex linkage, dominance andheterozygosity,

How can you determine the genotype of a pea plant that has purple flowers
Purple is the dominant trait (white is recessive) so the genotype of the purple plant could be either PP or Pp. Theway to ell for certain which genotype the purple flowering plant possesses is to do what's called a "test cross", crossing the unknown plant with the dominant trait with one which is recessive andgrowing the offspring to flowering.

If the purple parent was PP, all the offspring will be heterozygous (Pp) and will have purple flowers:

......|..P..|..P..|
..p..|..Pp.|.Pp.|
..p..|..Pp.|.Pp.|If the purple parent was heterozygous (Pp) half of the offspring will be purple and half white:

......|..P..|..p..|
..p..|..Pp.|.pp.|
..p..|..Pp.|.pp.|

If you flip two coins at once, will atleast one coin land on heads?
1/4 you see if you flip two coins there's a better chance you'll get a head and a tail then any thing else. 2/4 you'll get a head and a tail, 1/4 you'll get two heads...
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