Chapter 11 Deck 4 (slides 22-29) Flashcards
LAW OF ____ ______ – genes for different traits segregate independently during gamete formation
INDEPENDENT ASSORTMENT
_______ PRINCIPLES form the basis of the modern science of GENETICS
Mendel’s
The inheritance of biological characteristics is determined by individual units known as ____
GENES
____are passed from parents to their offspring
Genes
In cases in which 2 or more forms (ALLELES) of the gene for a single trait exist, some forms of the gene may be DOMINANT and others may be RECESSIVE. This is known as the Law of -______
Dominance
In most sexually reproducing organisms, each adult has 2 copies of each gene – one from each _____
parent
Each adult has 2 copies of each gene – one from each parent. These genes are SEGREGATED from each other when GAMETES are formed (Law of ______)
SEGREGATION
(Law of _______ ________): The alleles for different genes usually SEGREGATE INDEPENDENTLY of one another
Independent Assortment
In most organisms, genetics is more complicated, because: the majority of genes have more than ___alleles
2
In most organisms, genetics is more complicated, because: many traits are controlled by more than __ ___ of genes
a pair
_____ DOMINANCE – cases in which one allele is not completely dominant over another (called “BLENDING”)
Incomplete
__DOMINANCE – both alleles are dominant; both show up in the organisms phenotype (NO BLENDING)
COdominance
Codominance also seen in __ COAT COLOR in horses and cattle (Body covered with mixture of red and white hairs looks “pink”)
Roan
____ ALLELES – genes that have more than just 2 alleles (forms)
Multiple
Human ____ types are an example of Multiple Alleles
Blood
