Genetic & Blood Test Flashcards
Law of independent assortment
States that genes separate independently in meiosis
Sperm & egg meet
One allele from each to form to make a child
Incomplete dominance
Dominant allele is unable to fully express itself
Heterozygous black
Purebred recessive white
Child turns out white/tan
Codominance
Both alleles for a gene are fully expressed
AB
trait
genetically determined variant of a characteristic
feature, yellow flower
allele
different versions of a gene
one out of the genotype (1 letter)
gene
codes for a specific trait unit of heredity
dominant
gene thats expressed, capital
recessive
trait hidden by dominant, lower case
homozygous
2 of the same alleles TT or tt
heterozygous
person has 2 different alleles Tt
genotype
genetic make up of an organism, combination of genes for 1 or more specific traits TT, Tt, tt
phenotype
organisms appearance that results from the genotype TT-tall
probability
likely hood that a future event will occur, ratio 3:1
polygenic trait
describes a characteristic thats influenced by many genes
skin color, controlled by many genes
pedigree
chart shows occurence of genetic traits in several generations of a family
karyotype
photomicrograph of chromosomes
in blood types can a - recieve a positive?
positive receive -?
positive receives anything
negative can never receive a positive
heredity
passing of traits from parents to offspring
genetics
branch of science that studies heredity
gregor mendel
father of modern genetics
what did mendel use ?
peas