Vocab
the transmission of characteristics from parents of offspring
offspring of the P generation are called this
What is the F1 generation?
occurs when both alleles for a gene are expressed in a heterozygous offspring, such as pink four o'clock flowers
What is incomplete dominance?
QQ or qq
What is homozygous?
A cross between an organism showing the dominant trait and the homozygous recessive organism
What is a test cross?
the genetic makeup of an organism
What is a genotype?
states that alleles separate during the formation of gametes
What is the law of segregation?
both alleles are expressed in a heterozygous offspring
What is codominance?
having two similar, dominant alleles for a trait
What is homozygous dominant?
the observable traits
What is a phenotype?
an alternate form of a gene
What is an allele?
States that alleles for different characteristics are distributed to the gametes independently
What is the law of independent assortment?
2 or more alleles influence the phenotype resulting in a phenotype intermediate
What is incomplete dominance?
an organism having two different alleles for a trait
What is heterozygous?
in a monohybrid cross between two heterozygous organisms the predictable phenotypic ratio is...
What is 3:1?
a cross involving one pair of contrasting traits
What is a monohybrid cross?
segregation of alleles occurs during this type of cell division
What is meiosis?
Roan coat color
What is codominance?
What is heterozygous?
In a dihybrid cross between two heterozygous organisms the predictable phenotypic ratio is...
What is 9:3:3:1?
a segment of DNA that controls a particular hereditary trait
What is a gene?
If a trait occurs in 400 offspring out of a total of 1,600 offspring, what is the probability?
what is .25 or 25%?
ABO blood alleles and blood type AB
What are multiple alleles and codominance?
GGII or ggii
What is homozygous?
What is 1:2:1?