Lecture 9: Patterns of Inheritance Flashcards
(18 cards)
Who is considered the “father” of genetics?
Gregor Mendel
What does the term “dominant” mean in genetics?
That when present, the gene expresses itself (as a protein).
What does the term “recessive” mean in genetics?
That the gene can only express itself (by producing proteins) when a dominant gene is not present.
When you have two dominant genes (AA), you are ___.
Homozygous Dominant
When you have two recessive genes (aa), you are ___.
Homozygous Recessive
When you have two alternate forms of the gene in the allele (Aa), you are ___.
Heterozygous
An individual that is heterozygous (Aa) can produce two gametes. How are these gametes made?
Through meiosis
How many different gametes can a person who is AABb make?
2
Snapdragons are flowers that can come in red, white and pink. What kind of genetics cross is this?
Incomplete Dominance
Blood type is an example of co-dominance genetics crosses. What blood type is considered the “universal donor”?
Type O-
Which chromosome are sex-linked traits located?
X chromosomes
How many sex chromosomes do you have?
Two
In addition to sex-chromosomes, you have 44 ____ chromosomes.
Autosome
Males have the ____ sex chromosomes.
XY
Females have the ____ sex chromosomes.
XX
In a male, where does he inherit his Y chromosome from?
His father
In a male, where does he inherit his X chromosome from?
His mother
In a female, where does she inherit her X chromosomes from?
Both her mother and father
