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39 Cards in this Set

  • Front
  • Back
cell created by the union of the egg and sperm
ZYGOTE
the uniting of the egg and sperm
FERTILIZATION
female sex cell
EGG
male sex cell
SPERM
the allele which is not always expressed because it can be hidden
RECESSIVE
the allele which is always expressed when present
DOMINANT
how a recessive trait is expressed
TWO RECESSIVE ALLELES FOR THAT TRAIT
the way an organism looks
PHENOTYPE
different versions of a gene
ALLELES
anything related to genes
GENETICS
the transfer of pollen
POLLINATION
symbol for the parent generation
P1
symbol for the first offspring generation
F1
carry traits passed on from one generation to the next
GENES
the study of how traits are passed on from one generation to the next
HEREDITY
a cell that has one of each type of chromosome
HAPLOID
a scientist who studied the genetics of pea plants
MENDEL
a cross involving one trait
MONOHYBRID CROSS
number of boxes on the Punnett square for a monohybrid cross
4 (2x2)
number of letters in the gametes for a monohybrid cross
1
number of boxes on the Punnett square for a dihybrid cross
16 (4x4)
number of letters in the gametes for a dihybrid cross
2
number of letters in the genotypes of the parent or offspring for a monohybrid cross
2
number of letters in the genotypes of the parent or offspring for a dihybrid cross
4
a trait capable of masking another allele
DOMINANT
different traits are inherited independently if they are on different chromosomes
LAW OF INDEPENDENT ASSORTMENT
describes the genes on an organism's chromosomes
GENOTYPE
another word for sex cell
GAMETE
characteristics that are inherited
TRAITS
technique used to determine gametes for dihybrid crosses
FOIL (FIRST, OUTSIDE, INSIDE, LAST)
a genotype with two different alleles
HETEROZYGOUS
a genotype with two of the same alleles
HOMOZYGOUS
a genotype with two recessive alleles
HOMOZYGOUS RECESSIVE
a genotype with two dominant alleles
HOMOZYGOUS DOMINANT
another word for homozygous
PUREBRED
another word for heterozygous
HYBRID
two alleles for each trait must separate when gametes form so that a parent passes on at random only one allele for each trait
LAW OF SEGREGATION
paired chromosomes with genes for the same traits arranged in the same order
HOMOLOGOUS CHROMOSOMES
a cross involving two traits
DIHYBRID