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;
28 Cards in this Set
- Front
- Back
The "Father" of genetics was... |
C. Gregor Mendel |
|
What is the probability that the offspring of a homozygous dominant individual and a homozygous recessive individual will exhibit the dominant phenotype? |
D. 1.0 |
|
The first filial (F1) generation is the result of a cross between________ generations with opposing traits. |
B. P and P |
|
Which of the following is the designation for Mendel's original "True-Breeding" strains of plants? |
A. P |
|
The passing of traits from parents to offspring is called______________. |
D. Heredity |
|
A genetic trait that is always expressed in the offspring is called a_________ trait. |
A. Dominant |
|
If one parent is recessive and the other is heterozygous, the probability of recessive offspring is______. |
B. .5 |
|
To explain distribution of multiple traits during gamete formation, Mendel proposed the law of_____________________________. |
A. Independent Assortment |
|
The phenotype of an organism__________________________________________________________________. |
B. reflects traits that are actually expressed. |
|
If an individual has two recessive alleles for the same trait, the individual is said to be________________. |
A. Homozygous. |
|
Tallness, (T) is dominant over shortness (t) in pea plants. Which of the following represents the genotype of a pea plant that is homozygous for shortness? |
D. tt |
|
How many different phenotypes can be produced by crossing heterozygous parents with codominant alleles? |
C. 3 = Black, white, B&W |
|
A red flower is crossed with a yellow flower resulting in all orange flowers. This condition is called________________________________. |
B. Incomplete Dominance |
|
The expected genotype ratio resulting from a homozygous recessive x heterozygous monohybrid cross is_______. |
B. 1:1 |
|
In a dihybrid cross, what fraction of the offspring would we expect to be homozygous recessive for both traits when both parents are heterozygous for both traits? |
D. 1/16 |
|
What is the expected genotype ratio resulting from a heterozygous x heterozygous monohybrid cross? |
A. 1:2:1 |
|
What is the expected phenotype ratio resulting from a homozygous dominant x heterozygous monohybrid cross is? |
D. 1.0 |
|
An organism that has inherited two of the same alleles of a gene from its parents is called_________________. |
C. Homozygous |
|
In pea plants, yellow seeds are dominant over green seeds. What would be the expected genotype ratio in a cross between a plant with green seeds and a plan that is heterozygous for seed color? |
D. 1:1 |
|
What fraction of the offspring resulting from a heterozygous x heterozygous dihybrid cross would we expect to express both dominant traits? |
A. 9/16 |
|
A cross of two individuals for a single contrasting trait is called______________________ cross. |
A. Monohybrid |
|
Blood type is inherited as a combination of two alleles from three possible, to form how many genotypes? |
D. 6 |
|
If one parent is heterozygous for type A blood and the other is heterozygous for type B blood, then their children could have what blood type? |
E. A, B, AB, or O |
|
When two orange snapdragons flowers are crossed, we would expect the resulting phenotypes to be___________________________. |
B. One red, two orange, and one yellow |
|
Human blood type alleles (A, B, O) can combine to form how many phenotypes? |
C. 4 |
|
Crossing a two pink snapdragon flowers will likely result in ______ red snapdragons. |
C. 25% |
|
Since eyes color traits are carried on the X chromosome in fruit flies, crossing a heterozygous red eyed female with a red eyed male will result in_________ of the males having white eyes. |
C. 50% |
|
Given the facts from #32, the genotype of a white eyed female fruit fly would be__________. |
B. XrXr |