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Vocabulary
Mendel's Principles
Using the Punnett Square
Mystery
Fill in the blank
100
having 2 of the same alleles AA or aa
What is homozygous?
100
some alleles are dominant and some are recessive
What is the principle of dominance?
100
Brown (B) is dominant fur over silver-blue fur (b) in minks. If a homozygous brown mink is mated with a silver-blue mink, and 10 offspring are produced, how many will be expected to be silver-blue? Why?
0 because in order to be silver-blue, two b alleles have to be inherited.
100
father of genetics
Who is Gregor Mendel?
100
Mendel's factors are called ______.
What is genes?
200
factor passed from parent to offspring
What is a gene?
200
alleles separate during meiosis, offspring will inherit one allele for each trait from each parent
What is the principle of segregation?
200
A heterozygous tall plant is allowed to self-pollinate. What are the possible genotypes of the offspring? What percent are expected to be tall? What percent are expected to be short?
The genotypes of the offspring are TT, Tt, tt. 75% tall 25% short
200
Mendel used pea plants to study ______ of traits.
What is inheritance?
200
The haploid number is 8, so the diploid number is ___.
What is 16?
300
an inheritable characteristic
What is a trait?
300
genes on different chromosomes will most likely be randomly distributed during meiosis
What is independent assortment?
300
What are the allele combinations of the gametes produced by an individual with a genotype, AaBb?
AB Ab aB ab
300
Offspring that result from crosses between true-breeding parents with different traits are called _________.
What are hybrids?
300
Gametes are produced by a process called ______.
What is meiosis?
400
the actual genes of an organism such as PP, Pp, or pp
What is a genotype?
400
Purple (P) white (p) A pure-breeding purple is cross-pollinated with a pure-breeding white? A. What phenotype will the offsprings have? B. What genotype will the offsprings have?
What is A. purple B. Pp
400
What are the genes contained in the gametes of an heterozygous individual producing purple flowers?
P or p
400
The principles of ______ can be used to predict the traits of the offspring of a genetic cross.
What is probability?
400
The ________ __________ is used to show the results of a genetic cross, the genotypes of the offsprings and the alleles for each parent.
What is the Punnett square?
500
the outward expression of the genes such as purple or white flowers
What is a phenotype?
500
In mice, white (W) is dominant over brown (w), how can 2 white mice produce a brown mouse? What are the genotypes of each parent? What is the genotype of the brown offspring?
Each white mouse is heterozygous (Ww). Ww x Wx The genotype of the brown offspring is ww.
500
How many squares would the Punnett square contain for a cross between AaBb x AaBb? What fraction will be aabb?
16 squares 1/16
500
study of heredity
What is genetics?
500
Organisms with different alleles for a particular trait are said to be _________________.
What is heterozygous?