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;
24 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
Illustration used to calculate the expected results of simple genetic crosses |
Punnett square |
|
|
|
Cross between two individuals with homozygous traits |
Monohybrid cross |
TT x tt = Tt |
|
|
What are the laws of segregation? |
Each individual has two two factors for each trait The factors separate during formation of gametes Each gamete only contains one factor from each pair of factors Fertilization gives each new individual two factors for each trait |
|
|
|
Cross between an individual with dominant phenotype and an individual with recessive phenotype |
Testcross |
Tt x tt |
|
|
Individual with the same pairs of alleles |
Homozygous |
TT or tt |
|
|
Individual with different pairing of alleles |
Heterozygous |
Tt |
|
|
Specific location of a gene on homologous chromosomes |
Locus |
|
|
|
Alleles that exerts his phenotype effect on the heterozygote |
Dominant allele |
Uppercase case T when it's Tt |
|
|
An individual with two different alleles of a particular gene |
Heterozygote |
Tt |
|
|
Allele that exerts phenotype effect only on a homozygote |
Recessive allele |
tt |
|
|
Chart showing a family's history with regard to a particular genetic trait |
Pedigree |
|
|
|
phenotype most commonly found in natural populations |
Wild type |
|
|
|
Phenotype that results from a change in the most common allele |
Mutant |
|
|
|
Characteristics of female flies |
larger size pointed abdomen non black-tipped abdomen no sex combs present |
|
|
|
Characteristics of male flies |
smaller size rounded abdomen black-tipped abdomen sex combs present on front legs |
|
|
|
why is it important to be able to differentiate between male and female flies? |
to ensure that you have the appropriate mix of male and female flies in your cross |
if you are unable to correctly separate male and female flies, your cross may only contain a single sex or have the incorrect genotype. Some crosses use male and female flies with different genotypes |
|
|
what are the wild type characteristics of fruit flies? |
red eyes long, flat, oval wings light brown bodies |
|
|
|
The allele for long wings is dominant for fruit flies |
true |
|
|
|
What is the genotypic ratio for fruit flies of phenotypic ratio 3:1? |
1 LL |
|
|
|
The allele for light brown body (B) is the dominant allele for fruit flies |
true |
|
|
|
What were the adult flies from the LlBb x LlBb vial removed? |
Goal of experiment is to count the phenotypic ratio of the offspring; therefore, the parental generation must be removed |
|
|
|
Fruit fly eye color gene is located on the X chromosome are considered what? |
x-Linked |
|
|
|
Red eye color is wild type and dominant for fruit flies |
true |
|
|
|
A disease that results in faulty blood clotting, caused by a X-Linked recessive allele |
Hemophilia |
|
