Download 1. Offspring that are the result of mating between two genetically

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Offspring that are the result of
mating between two genetically
different kinds of parents--the
opposite of purebred. 2 different
alleles in the gene pair
The study of gene structure and
action and the patterns of
inheritance of traits from parent to
offspring.
A 19th century central European
monk scientist who published his
ideas about genetics in 1866 but
largely went unrecognized until
1900, which was long after his
death. He acquired his
understanding of genetics mostly
through pea plant breeding
experiments.
Offspring that are the result of
mating between genetically similar
kinds of parents--the opposite of
hybrid.
Units of inheritance usually
occurring at specific locations on a
chromosome. These units are
responsible for hereditary
characteristics in plants and
animals. They “code” for a specific
trait.
Alternate forms of the same
gene. Because they are different,
their action may result in different
hybrid
genetics
Gregor
Mendel
purebred
genes
alleles
expressions of a trait. (brown
eyes, blue eyes, green eyes, etc)
7. The genetic makeup of an
individual for a trait or for all of
his/her inherited traits—not the
observable or detectable
characteristics. Can’t see the
genotype, it is the gene pair for a
trait. Bb or BB or bb
8. A genotype consisting of two
identical alleles of a gene for a
particular trait. BB or bb
9. A genotype consisting of two
different alleles of a gene for a
particular trait. Bb
10. The observable or detectable
characteristics of an individual
organism; the detectable
expression of a genotype. Brown
eyes, dimples, widows peak. It’s a
trait you can see.
11. The general term for an allele that
masks the presence of another
allele in the phenotype.
12. The general term for an allele that
is masked in the phenotype by the
presence of another allele.
genotype
homozygous
genotype
heterozygous
genotype
phenotype
dominant
allele
recessive
allele
Study Guide For Genetics Test
A simple graphical method of
1. showing all of the potential
combinations of offspring
genotypes that can occur and their
probability given the parent
genotypes. This system involves
the use of a tic-tac-toe square. It
was named after pioneer British
geneticist.
The term for a genotype in which
2. there are two dominant alleles.
The term for a genotype in which
3. there are two recessive alleles.
Punnett
square
homozygous
dominant
homozygous
recessive
Experiment by Gregor Medel:
He tested Pea Plants to study the laws of inheritance and
genetics.
Outcome of first 3 generations:
1. P Generation – Crossed 2 purebred plants, 1
homozygous dominant and 1 homozygous recessive
2. F1 - 2nd generation all hybrid plants
3. F2 - 3rd generation 3 showed dominant trait, 1 showed
recessive trait.