Finals Cards Flashcards
Blood type O
ii
Blood type B
B B I I (Or) B I i
Blood type AB
A B
I I
Type A blood
A A I I (or) A I i
Sex linked
example
Genes that are carried by either sex chromosome
Hemophilia is an X linked trait
Polygenic
example
Many genes that control a single trait
Height, skin color, etc…
Intermediate inheritance is also called?
Incomplete dominance (red+white=pink)
The principle of independent assortment
Each pair of alleles are separated independently and are not inherited together
What is the principle of segregation?
Each organism had 2 alleles for a gene. Only 1 allele from each gens will be inherited by the offspring
What’s a gene? An allele?
Allele: alternate form of a gene
Gene: a use of heredity (combo of alleles) that is transferred from patent to offspring (determine characteristics)
On a Cladogram, whats going to be most closely related to one another? The first two animals or the last two?
Last two
Homologous structure
Same structure, different function
forelimb of an animal
Analogous structure
Same function, different structure
bird/bug wing
((does not prove evolution))
Molecular evidence for evolution?
DNA sequence
Gene pool
All copies of a gene that exists in a population
What are Multiple alleles?
example
Several alleles, 1 trait
Blood types
If disruptive selection is occurring, which individuals are more likely to survive?
Ones with extreme traits
The DNA sequence in 3 different organisms is almost exactly the same. This is an example of…?
Molecular homologies
How does artificial selection produce rapid changes in the phenotype of an organism?
By changing the allele frequency and selecting for new traits
If a homozygous tall plant and a homozygous short pea plant crossed…?
The recessive trait would seem to disappear
Organisms that have 2 identical alleles for a particular trait are said to be…?
Homozygous
The phenotype of an organism is determined by…?
It’s environment AND phenotype
A trait controlled by many genes is called…?
Polygenic inheritance
