Bio chapter 14
Card Set Information
Bio chapter 14
Law of Independent Assortment?
Each pair of alleles segregates independently of each other pair of alleles during gamete formation
Heterozygous for 2 characters being followed in the cross
Heterozygous for one particular character being followed in the cross
Important application of pedigree?
To help calculate probability that a future child will have a particular genotype and phenotype
Collected info about a familys history for a trait and assembling this info into a family tree describing traits of parents and children
An organism that has a pair of identical alleles for a character (breed true)
Heterozygous? They produce?
Organism with 2 different alleles for a gene
gametes with different alleles (not true breeding)
Crossing dominant homozygotes with recessive homozygotes, every offspring will have 2 different alleles
1/4 of F2 plants have 2 white flower alleles, what will they do?
Express recessive trait (white color)
1/2 of F2 offspring have inherited one purple flower allele and one white flower allele, what color?
In F2 offspring, what color will flowers be? 1/4 of plants have inherited 2 purple flower alleles
Predicts allele composition of offspring from a cross between individuals of known genetic makeup
Ex of Law of Segregation?
Egg or sperm gets only one of 2 alleles that are present in somatic cells making up the gamete
Law of Segregation?
2 alleles for a heritable character segregate during gamete formation and end up in different gametes
No noticeable effect on the organisms appearance
Determines organisms appearance
2 alleles at a particular locus can be? Ex?
or differ as in ?
Identical, true breeding plants
Alternat versions of a gene
purple flower allele and white flower allele (2 DNA sequence variations)
each gene is a sequence of nucleotides at a locus. DNA at locus varies in nucleotide sequence