BIOLOGY

posted by .

A girl crossed a pure short, black haired animal with a pure long, brown haired individual (cross A). The F1 consisted of 10 individuals who had all the same phenotype. She interbred this F1 generation (cross B) and counted the offspring, which consisted of 160 guinea pigs with the following phenotypes:

91 with short, black hair
29 with short, brown hair
28 with long, black hair
12 with long, brown hair

(This is called a dihybrid cross).

1)Show cross A and give the results.
2)show cross B and in doing so give the phenotypes and genotypes the breeder obtained.

PLEASE HELP!

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. biology

    A girl crossed a pure short, black haired animal with a pure long, brown haired individual (cross A). The F1 consisted of 10 individuals who had all the same phenotypes. She interbred this F1 generation (cross B) and counted the offspring, …
  2. biology, plz help!

    A girl crossed a pure short, black haired animal with a pure long, brown haired individual (cross A). The F1 consisted of 10 individuals who had all the same phenotypes. She interbred this F1 generation (cross B) and counted the offspring, …
  3. Latin

    I took out the Latin Rosetta Stone from the library and im at the end of lesson 11 these 2 picture are confusing me bc of the endings. One picture has a girl with short hair, the other a boy w short hair. For girl it says "Femina capillos …
  4. biology

    A poultry farmer hopes to profit from the current craze for keeping egg laying chickens as pets and wishes to increase his stock of interesting and unusual breeds. (a) The farmer crossed a pure-breeding white chicken with a pure-breeding …
  5. Biology - Genetics

    Please help me!!!! I need help with this practice test question. In Guinea pigs, the brown coat (B) is a dominant over the cream-coloured coat (b), and straight hair (H) is dominant over curly hair (h). Using a Punnett square, complete …
  6. biology

    A dominant gene A produces wire-haired texture in dogs. Its recessive aamllele a produced smooth hair. Cross the heterozygous wire-haired dog with homozygous smooth-haired dog. List the genotype and phenotype ratios of all the possible …
  7. biology

    If short hair (L) is dominant to long hair (l), then to determine the genotype of a short-haired animal it should be crossed with Answer a. Ll b. ll c. LL d. All of the above. e. None of the above.
  8. biology urgent

    In mice, a gene controlling coat colour has 2 alleles; B (black) and b (white). A pure breeding black mouse is crossed to a white mouse and all the offspring are black. The offspring are then crossed to white mice. The phenotypes of …
  9. Biology

    A poultry farmer hopes to profit from the current craze for keeping egg laying chickens as pets and wishes to increase his stock of interesting and unusual breeds. (a) The farmer crossed a pure-breeding white chicken with a pure-breeding …
  10. biology (genetics)

    A pure-breeding white mouse with a long tail was crossed to pure-breeding pink mouse with a short tail. The F1 progeny were all pink with long tails. These F1 mice were test crossed to white mouse with a short tail. If the gene controlling …

More Similar Questions