Biology Flashcards
gene
the molecular unit of heredity of a living organism
allele
one of 2 or more forms of the same gene
Gregor Menadel
Father of genetics; studied inheritance in pea plants
Law of Dominance
one trait masks the effects of another trait
Law of segregation
2 alleles for each trait will separate during the formation of gametes
Law of Independent Assortment
Each gene is inherited independently of other traits
Ratio
comparing similar groups using numbers
cell cycle
series of events that take place in a cell
mitosis
cell division in which 2 daughter cells have same # and kind of chromosomes as parent nucleus
cytokinesis
brings separation into 2 daughter cells
chromosomes
carry genetic info
sister chromatic
single chromosome is replicated
spindle
collection of minuet fibers composed of microbes
gametes
Haploid that is able to unite with another of the opposite sex to form zygote
fertilization
fusion male + female gametes
Diploid
containing 2 complete sets of chromosomes one from each parent
meiosis
cell division resulting in 4 daughter cells
crossing over
exchange of genes when cells cross each other
cancer
uncontrolled cell division
carrier
A person who is heterozygous for a recessive disorder
Multiple Alleles
having more than two alleles for a specific trait
US blood percentage
44% O
42% A
10% B
4% AB
How do you determine the phenotypic ratio?
Dominate:Recessive
Who discovered sex linked genes?
Thomas Hunt Morgan
