Unit 4 Genetics Study Guide

GJUHSD Study Guide

15 cards   |   Total Attempts: 188
  

Cards In This Set

Front Back
What is the passing of traits from parents to offspring called?
Heredity
How many sets of instructions does a fertilized egg receive from EACH parent?
One set from each parent. For humans that is 23 chromosomes from mom and 23 chromosomes from dad.
What is the segment of DNA that determines the inheritance of a particular trait called?
Gene
What is an inherited characteristic of an organism called?
Trait
What is the amount of genetic information which you receive from each of your parents?
� of the genetic information from mom and � of the genetic information from dad
What are traits controlled by?
Genes
What are examples of inherited characteristics?
Hair color, eye color, skin color, widow�s peak
What are examples of inherited characteristics?
Hair color, eye color, skin color, widow�s peak
What are some examples of characteristics that are not inherited?
Taste in music, Taste in books, how long you wear your hair
What is the form of a gene called that shows up even when only inherited from one parent?
Dominant
What is the form of the gene called that shows up only when inherited from both parents?
Recessive
A bent little finger is an inherited trait which is present even when inherited only from one parent. What type of trait is this?
Dominant
Freckles are a trait which only shows up when inherited from both parents. What type of trait is this?
Recessive
Tongue rolling is a dominant trait which means that someone who can roll their tongue has inherited this trait from how many parents?
One or both parents
Albinism (the absence of skin pigmentation) is a recessive trait this means that someone who is an albino has inherited this trait from how many parents?
Both parents