GENETICS ehhhhhhhhhhhhhhhhhhh Flashcards
study for test then forget
all the characteristics of an organism
trait
the passing of traits from parents to offspring
heredity
the study of how traits are inherited
genetics
coiled structures made of DNA and proteins called histones
chromosomes
chromosomes are divided into these areas
gene
the genetic material in our cells
dna
a complete set of human chromosomes
karyotype
his discoveries formed the basis of genetics, the science of heredity (known for his pea plant experiment)
gregor mendel (father of modern genetics)
only one gene for the trait needs to be present for the trait to show
dominant trait
both genes for the trait must be present for the trait to show
recessive trait
the gentic makeup of an organism for a trait or traits (AA, Aa, aa)
genotype
the form of the trait that shows up (taster, left handed, red hair)
phenotype
both genes for the trait are the same (AA,aa)
purebred (homozygous)
has one dominant and one recessive gene (Aa)
hybrid (heterozygous)
an alternative form of a trait
allele
heterozygote produces an intermediate phenotype
incomplete dominance
traits controlled by genes on the sex chromosomes
sex-linked trait
the process in which a diploid set of chromosomes is reduced to a haploid set in order to produce gametes
meiosis