Vocabulary
Alternate forms of a gene
What is allele?
Using the letter R and r, a heterozygous genotype would be what letter combination?
What is Rr?
Brown fur is dominant (B) to white fur (b).
A white furred rabbit and a Bb rabbit have a litter of rabbits. What percentage of the rabbits will have brown fur and what percentage of rabbits will have white fur?
What is 50% brown
What if 50% white
The genetic makeup of an organism
What is genotype?
RR as a genotype would be called…
homozygous recessive
heterozygous
homozygous dominant
Two eyes is dominant (E) and three eyes is recessive (e).
If a two-eyed monster with a homozygous dominant genotype had 6 kids with a three-eyed monster, how many of those children would you expect to have three eyes?
What is zero?
The physical characteristics of an organism.
What is phenotype?
If smooth fur is dominant to curly fur, what genotype(s) could give a dog smooth fur?
What is Rr and RR?
In garden peas, round peas are dominant (R) and wrinkled peas are recessive (r).
If a pea plant with a homozygous recessive genotype is pollinated by a pea plant with a heterozygous genotype, what percentage of pea plants will be wrinkly?
What is 50%?
When alleles are the same (both are dominant or both are recessive).
What is homozygous?
If two smooth coat dogs (Rr and Rr) have a litter of puppies, what genotype would be the most common among the puppies?
What is Rr (heterozygous)?
In garden peas plants, purple flower color (F) is dominant to white flower color (f).
If a homozygous recessive pea plant is pollinated by a white pea plant, what percentage of the pea plants will be purple?
When there is a mixture of dominant and recessive.
What is heterozygous?
Black fur is dominant to white fur in a species of rabbit; using the letter B and b, what percentage of baby rabbits would have the genotype Bb if the parents are Bb and bb?
Bb + bb = …% Bb
What is 50%?
Green pea color is recessive (y) to yellow (Y) pea color.
A pea plant that produces green peas is pollinated by a plant that produces yellow peas. This cross results in all yellow peas. What is the genotype of the yellow pea plants parent?
What is YY (heterozygous dominant)?