Chapter 14 - Biology Exam

Last update by mayur on 03/27/2014
614245 People have viewed this Quiz
  • Share

Two true-breeding stocks of pea plants are crossed. One parent has red, axial flowers and theother has white, terminal flowers;all F1individuals have red, axial flowers. The genes for flowercolor and location assort independently. If 1,000 F2offspring resulted from the cross,approximately how many of them would you expect to have red, terminal flowers?

A) 65

B) 190

C) 250

D) 565

E) 750



Answer:

B) 190



View Chapter 14 - Biology Exam as Flashcard Deck

Related Quiz Content
  • feldman2009

    Pea plants were particularly well suited for use in Mendel's breeding experiments for all of the following reasons except that


    A) peas show easily observed variations in a number of characters, such as pea shape and flower color.


    B) it is possible to control matings between different pea plants.


    C) it is possible to obtain large numbers of progeny from any given cross.


    D) peas have an unusually long generation time.


    E) many of the observable characters that vary in pea plants are controlled by single genes.

    D) peas have a short generationtime.
  • feldman2009

    Given the parentsAABBCc×AabbCc, assume simple dominance and independent 

    assortment. What proportion of the progeny will be expected to phenotypically resemble the first parent? 

    A) 1/4 

    B) 1/8 

    C) 3/4 

    D) 3/8 

    E) 1 



    C) 3/4 



  • feldman2009

    Labrador retrievers are black, brown, or yellow. In a cross of a black female with a brown male, results can be either all black puppies, 1/2 black to 1/2 brown puppies, or 3/4 black to 1/4 yellow puppies.

    These results indicate which of the following?


    A) Brown is dominant to black.


    B) Black is dominant to brown and to yellow.


    C) Yellow is dominant to black.


    D)There is incomplete dominance.


    E) Epistasis (2 or more genes affecting a phenotype) is involved.


    E) Epistasis (2 or more genes affecting a phenotype) is involved. 



  • feldman2009

    How many genes must be responsible for these coat colors in Labrador retrievers? 

    A) 1 

    B) 2 

    C) 3 

    D) 4 



    B) 2 



  • feldman2009

    In one type cross of black × black, the results were as follows: 

    9/16 black 

    4/16 yellow 

    3/16 brown 

    The genotype aabb must result in which of the following? 

    A) Black 

    B) Brown 

    C) Yellow 

    D) A lethal result 



    C) Yellow 



  • feldman2009

    Radish flowers may be red, purple, or white. A cross between a red-flowered plant and a white- flowered plant yields all-purple offspring. The part of the radish we eat may be oval or long, with long being the dominant characteristic.

    In the F2 generation of the above cross, which of the following phenotypic ratios would be expected?


    A) 9:3:3:1


    B) 9:4:3


    C) 1:1:1:1


    D) 1:1:1:1:1:1


    E) 6:3:3:2:1:1



    E) 6:3:3:2:1:1 



  • feldman2009

    A 1:2:1 phenotypic ratio in the F2generation of a monohybrid cross is a sign of

    A) complete dominance.

    B) multiple alleles.

    C) incomplete dominance.

    D) polygenic inheritance.

    E) pleiotropy.


    C) incomplete dominance. 



  • feldman2009

    In snapdragons, heterozygotes for one of the genes have pink flowers, whereas homozygotes have red or white flowers. When plants with red flowers are crossed with plants with white flowers, what proportion of the offspring will have pink flowers?


    A) 0%


    B) 25%


    C) 50%


    D) 75%


    E) 100%


    E) 100% 



  • feldman2009

    Tallness (T) in snapdragons is dominant to dwarfness (t), while red (R) flower color is dominant to white (r). The heterozygous condition results in pink (Rr) flower color. A dwarf, red snapdragon is crossed with a plant homozygous for tallness and white flowers. What are the genotype and phenotype of the F1individuals?


    A)ttRr–dwarf and pink


    B)ttrr–dwarf and white


    C)TtRr–tall and red


    D)TtRr–tall and pink


    E)TTRR–tall and red


    D)TtRr–tall and pink 



  • feldman2009

    Skin color in a certain species of fish is inherited via a single gene with four different alleles. How many different types of gametes would be possible in this system? 

    A) 1 

    B) 2 

    C) 4 

    D) 8

    E) 16 



    C) 4