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Genetics Test
Study Guide
20
Science
7th Grade
02/03/2014

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Cards

Term
bb
Definition
Write the 2 recessive alleles for blue eyes
Term
Write the dominant / recessive allele combination for hybrid brown eyes
Definition
Bb
Term
Probability
Definition
Term
What did Mendel predict was the probability of a tall offspring from a cross between 2 hybrid tall plants
Definition
75%
Term
What did Mendel do to the pea plants in order to cross genes between 2 different plants
Definition
Cross pollination
Term
punnett square
Definition
What is the puzzle that shows the possible combinations of alleles from a genetic cross?
Term
What is the probabilty of an offspring with black feathers if the homozygous black feather is crossed with homozygous white feathers
Definition
100%
Term
What is an organism's physical appearance
Definition
Phenotype
Term
What are the physical characteristics called that we study in genetics
Definition
Traits
Term
What is an organism's genetic make-up for a trait
Definition
Genotype
Term
An orgainsm that has 2 identical alleles for a trait
Definition
Homozygous
Term
What kind of plants did gregor Mendel cross-pollinate in order to study genetics
Definition
Pea plants
Term
In Mendel's experiment, what percent of the F2 generation had a trait that was ABSENT in the F1 generation
Definition
25
Term
What are the factors that control traits
Definition
Genes
Term
What is the study of heredity
Definition
Genetics
Term
Heredity-
Definition
The passing of traits from parents to offspring
Term
What are different forms of a gene called
Definition
Alleles
Term
If an organism has 2 different alleles for a trait, then it is said to be ________
Definition
Heterozygous
Term
If an organsim has 2 of the same alleles for a trait, then it is said to be _________
Definition
Homozygous
Term
Gregor Mendel
Definition
What scientist removed the stamens from flowers, and brought in pollen from other plants?
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