Genetics Flashcards
What happens when genotype of a person doesn’t have same allealles?
Heterozygos
What is the genotype of a male?
XY
PP and pp are?
homozygus allealles
passing of traits from parents to offspring?
heredity
one set of instructions for an inherited trait?
gene
the plant that Mendel studied?
pea plant
type of plant has male + female reproductive structures?
self-pollinating plant
organize possible combinations of offspring from particular parents?
Punnett square
what is the term for Likelihood of a possible future event will occur in any given instance?
probability
Organisms appearance or other detectable characteristics?
phenotype
Mendel’s second pollination?
self sexual repro pollinating
one trait not completely dominant over another. traits don’t blend, allele has own degree of influence?
incomplete dominance
types of phenotypes of his first gen-plants?
dominant
ratio of dominant to recessive traits in second experiments
3%
different forms of a gene (often dominant or recessive)
allele
both inherited alleles together form an organisms ______
genotype
a diagram that shows different generations of a family is called a _________
pedigree
type of repro that requires only one parent cell?
asexual repro
chromosomes that have the same sequence of genes plus same structures?
homologous chromosomes
What is the number of chromosomes in sex chromosome?
23
stage of meiosis when chromatids line up?
metaphase
trait fades-recessive a half-filled circle or square on pedigree
acarries
What is the number of steps in meiosis?
3 steps
