A rabbit with black fur (B) is crossed with a rabbit with white fur (b). All of the offspring have black fur. What is the genotype of the black rabbit parent?

In a certain type of pea plant, the gene for yellow color (Y) is dominant to the gene for green color (y), and the gene for round shape (R) is dominant to the gene for wrinkled shape (r). If a homozygous dominant plant is mated with a homozygous recessive plant (P-gen), what proportion in the F2 generation will be homozygous recessive? a) 1/4 b) 1/16 c) 3/4 d) 3/8

In sasquatches, solid coat color (D) is dominant over spotted coats (d) and straight fur (R) is dominant over frizzy fur (r). You have a solid-colored sasquatch with straight fur and want to determine its genotype, so you decide to perform a TEST CROSS. What is the GENOTYPE of the sasquatch you would cross to this solid-colored, straight haired sasquatch? HINT: Go read the section of chapter 3 on testcrosses, pg. 57 of edition 5. spotted coat with frizzy fur solid coat with straight fur ddrr DdRr

In Border Collies, black coat (B) is dominant to red coat (b). A breeder has a black male that has won numerous awards.T he breeder would like to use the dog for breeding if he is purebred (BB). To learn this information, she testcrosses him with a red female (bb). a) If the black male is BB, what kind of gamete (sperm) can he produce? b) If the red female is bb, what kind of gamete (eggs) can she produce? c) If the black male is Bb, what kind(s) of gametes (sperm) can he produce? d) If any of the puppies are red, what is the father's genotype?

In moose, brown coat color (B) is dominant to albino (no pigment) (b) and rough coat (R) is dominant to smooth coat (r).  Two moose are selected for breeding and their genotypes are BBrr and bbRR. The F1 offsprings are then crossed to each other. What is the expected fraction of moose in the F2 that will be albino with a rough coat? a) 1/16 b) 3/16 c) 9/16 d) 1

In guinea pigs, the gene for black coat color is dominant to the gene for white coat color. What will be the genotypic ratio for the cross between two heterozygous parents?

In a mendelian monohbrid cross which generation is always completely heterozygous?

The phenotype of spotting in dogs (A) is dominant to no spots (a).  When 2 heterozygous spotted dogs are crossed (Aa X Aa), the outcome is shown below: 2/3 Spots 1/3  No Spots What is the best explanation for this outcome, and what are the genotypes of spotted and non-spotted offspring?

A heterozygous tall pea plant is crossed with a short pea plant. Choose the correct answer that shows the cross and the ratio of the offspring. A) Cross Tt x Tt, F: TT, Tt, Tt, tt; ratio 3:1B)Cross TT x Tt; F: TT, Tt- no rationC)Cross tt x tt; F:Tt onlyD)Cross TT x tt; F:TT, tt; ratio 1:1E) Cross Tt x tt; F: Tt, tt; ratio 1;1

In pea plants, purple flowers are dominant to white flowers.  Perform the following cross- A pea plant pure-breeding for purple flowers with a white-flowered pea plant. What percentage of their offspring will be homozygous?  What percentage of their offspring will be purple?  What percentage of their offspring will be pure-breeding?