Science Review Flashcards
Memorization (23 cards)
Who is Gregor Mendel?
The father of genetics
What are the Mendel laws?
Law of Segregation, Law of Independent Assortment
What did Mendel discover?
That the plants’ offspring retained traits of parents
Two forms of a gene (dominant and recessive)
Alleles
The stronger of the two genes and expressed in a hybrid
Dominant gene
Show up less often in a cross and is hidden when a dominant gene is present
Recessive gene
Any characteristic that is passed from parent to offspring
Trait
Passing of traits from parent to offspring
Heredity
Study of heredity
Genetics
What is the law of Independent Assortment?
The law of Independent Assortment states that the alleles for different genes segregate independently of one another during gamete formation.
True or False: The law of Independent Assortment applies only to genes located on the same chromosome.
False
Fill in the blank: According to the law of Independent Assortment, the inheritance of one trait _______ affect the inheritance of another trait.
does not
Which of the following best illustrates the law of Independent Assortment? A) Two traits inherited together B) Traits segregating independently C) Traits linked on the same chromosome
B) Traits segregating independently
What is the Law of Segregation?
The Law of Segregation states that during the formation of gametes, the two alleles for a trait separate from each other so that each gamete carries only one allele for each gene.
True or False: The Law of Segregation applies only to dominant traits.
False
Which of the following best describes the process of segregation? A) Gametes receive two alleles for each gene B) Alleles for a trait separate during gamete formation C) Alleles are permanently linked D) None of the above
B) Alleles for a trait separate during gamete formation
What does the Law of Segregation imply about the inheritance of traits?
It implies that offspring inherit one allele from each parent, resulting in a combination of alleles that determines the trait.
When alleles are blended and the offspring have a mix of their parent traits
Incomplete dominance
Both alleles are expressed
Codominance
Determined by multiple genes
polygenetic trait
Different alleles of a gene occupy the same positions on each chromosome
homologous chromosome
When there is two or more than two allele possibilities for a gene
Multiple alleles