Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
|
What is a genotype?
|
All the alleles of an organism's chromosomes.
Can refer to one or more genes. |
|
|
What is a phenotype?
|
The observable traits and all characteristics of an organism.
|
|
|
What is heterozygous?
|
When the two alleles for a gene have different information.
|
|
|
What is homozygous?
|
When two alleles have the sam information.
|
|
|
What is dominant?
|
A genetic factor that blocks antother genetic factor.
|
|
|
What is recessive?
|
A genetic factor that is blocked by the presence of a dominant factor.
|
|
|
What is difference between Genes and alleles?
|
Gene: a section of DNA for a specific trait (eye color)
allele: each form of the gene that is different(brown,blue,green) |
|
|
Whick helps explain Mendels law of heredity?
meiosis, mitosis,proteins, phenotypes |
The movement of chromosomes during meiosis explains Mendels law of segregation and independent assortment
|
|
|
What organism did Mendell study?
|
Garden pea plants.He chose pea plants because they are easy to grow, reproduce quickly, come in many varieties and are edible.
|
|
|
What are 3 recessive genetic disorders?
|
1.cystic fibrosis
2.hemophelia 3. Down syndrome |
|
|
How many alleles does a parent pass on to an offspring?
|
One
|
|
|
What is a punnett square?
|
A square that is used to predict the gentoypes and phenotypes of offspring.
|
|
|
Codominance
|
When both alleles can be observed in a phenotype.
|
|
|
Pedigree
|
Shows the genetic traits that were inherited by memvers of a family tree.
|
|
|
Polygenic inheritance
|
When multiple genes determine the phenotype of a trait.
|
