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Acquired Traits
Traits
Punnet Square
Vocabulary/Terms
miscellaneous
100
Give one example of an acquired trait that you can physically see
Answers vary: Scars on your knees, colored hair, painted nails
100
Traits that are passed from parents to their offspring are __________.
Inherited Traits
100
A gene that can hide the effect of another gene.
What is a dominant gene?
100
Trait
Are characteristics in a person, plant, or animal. Some of them can be seen with your eyes and some cannot.
100
An organism that is AA is said to be ________________
What is purebred dominant?
200
Give an example of a learned behavior
Answers vary: Dolphins doing tricks, playing the violin, eating with a fork
200
Examples of inherited traits in humans include:
eye color, attached earlobes, hair color, etc.
200
What will physically show up in an offspring is called its _____________________?
What is a phenotype?
200
Animals with _____________ traits usually live long enough to pass on their genes to offspring.
Positive or helpful
200
An organism that is aa is said to be ________________
Purebred recessive
300
Give the definition of a learned behavior
A learned behavior is a behavior that an animal acquires through experience. These are not passed down from parents and will not get passed off to future offspring.
300
Every offspring gets how many factors for each trait?
Two - One from their mom one from their dad
300
What chance would there be for a recessive trait to be expressed in an offspring when the parent genes are all dominant (dominant purebred).
What is 0% chance?
300
What is a gene?
The part of the chromosome that contains the DNA "code" for an inherited trait.
300
Gregor Mendel studied pea plants and found that this trait was dominant.
Tall
400
How do instincts differ from learned behaviors?
Instincts are passed from parent to offspring. An animal is born with these behaviors. In contrast, learned behaviors must be acquired through experience or must be taught.
400
A gene whose expression is hidden by a dominant gene. Give an example in humans.
What is a recessive gene? Example straight hair or left-handedness.
400
Calculate the probability of the offspring from the cross of a parent with two recessive genes (rr) with a parent with a hybrid gene (Rr).
What is 1/2 (2/4), 50% chance Rr and 1/2 (2/4), 50% chance rr.
400
Approximately how many genes do you have?
~25,000
400
Which genes, or factors, are passed to offspring happens by ______________ .
Chance
500
Is hunting a learned behavior or an instinct?
BOTH. For example, cheetahs are born with the instinct to hunt, but they must learn from their mothers how to hunt effectively.
500
An individual that has a dominant and a recessive gene for a trait.
Hybrid
500
Complete the Punnet Square for the offspring of two parents, both hybrid for smooth and rough fur. Smooth fur is recessive, and rough fur is dominant. (use R's and r's)
What are two hybrid offspring (50% chance), one dominant (RR) and one recessive (rr) offspring?
500
What is a Punnett Square?
A diagram (or square) used to predict the traits that the offspring will show based on the parents' genotypes.
500
The geneotypes and phenotypes of the offspring in a hybrid and purebred recessive parent cross are......(Use T and t)
What is ----(Mrs. Sullivan will show you)