Show:
Punnett Squares
Dominant/Recessive
Pheno/Genotype
Mendel/Other
Alleles/Random
100
A diagram used to show possible genetic combinations.
Punnett Squares
100
An allele that can mask, or hide, the presence of another allele.
dominant
100
The phenotype is what?
the observable characteristics as expressed by the genes (or genotype)
100
Describe Mendel's pea plant experiments.
Mendel cross-pollinated certain pea plants in order to observe the offspring of that cross.
100
The variations of a specific gene are known as?
alleles
200
black hair (B) is dominant over white hair (b). The two possible genotypes for a black haired rabbit are what?
Bb and BB
200
An allele that can be masked, or hidden, by the presence of another allele.
recessive
200
Alleles that display equal power in determining phenotype?
codominant
200
A record that shows a family tree and family inheritance patterns.
pedigree
200
The presence of two different alleles on the same gene for one trait?
heterozygous
300
The genotype for a white haired rabbit would be what?
bb
300
incomplete dominance is a condition in which...what?
both alleles influence the phenotype, causing a blended appearance.
300
An organism that has two different alleles for a particular trait is a ...
hybrid
300
Describe inbreeding.
What is Inbreeding is the mating of two closely related animals.
400
The Punnett square of a white-haired female rabbit with a black-haired heterozygous male rabbit looks like what?
b b B Bb Bb b bb bb
400
Explain why the female rabbit's phenotype (white), although recessive, can show in her offspring.
If the hybrid male donates his recessive white-hair allele b, it would pair with the female's recessive allele, making a bb genotype. The offspring would then show the recessive phenotype.
400
White flowers are crossed with red flowers. The alleles for red and white flowers show incomplete dominance. The allele for red is R and the allele for white is W. What would the resulting genotypes/phenotypes be?
RW pink flowers
400
heredity is...
the transmission of genetic traits from parent to offspring
400
What are the benefits and problems of inbreeding?
The benefits include the ability to magnify certain traits. Some problems include more genetic defects appearing in the phenotype because the animals are too closely related.
500
What percentage of the offspring would be black-haired? white-haired?
50% 50%
500
Explain the difference between dominance, codominance, and incomplete dominance. Use examples.
Dominance completely masks a recessive trait. (Tall and short alleles..tall appearance) Codominance allows for both alleles to appear equally in the phenotype. (black and white patches) Incomplete dominance blends the appearance of the two phenotypes. (pink flower)
500
Give an example of incomplete dominance and codominance.
incomplete = wavy hair (straight hair and curly) codominance = cow or different colored eyes
500
What did Mendel discover and conclude about genetics from his experiments?
He discovered that sometimes tall plants produce short plants, and that crossing two short plants always yielded short plants.