Post a New Question

genetics

posted by .

can u help me with this qs

pure breeding white budgies were crossed with pure breeding yellow and green budgies. all the F1 offspring were yellow and green. the F1 was then testcrossed with pure breeding white budgies, and the offspring were as follows:

Green and Yellow 25
White 27
Blue and White 23
Yellow and White 24

Explain these results using symbols and statistics. Provide the genotypes of the parents, F1 and progeny from the testcross and
corresponding phenotypes (5 marks)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. biology

    (1)Mendel crossed pure-breeding pea plants grown from round seeds with purple flowers with pure-breeding plants grown from wrinkled seeds with white flowers. All the progeny were round seed, purple flowers. Explain this with a suitable …
  2. Genetics

    Two traits (stem length and seed color) are simultaneously examined in a cross of two pure-breeding pea plant varieties. A tall green plant is crossed with a dwarf yellow plant, and the resulting F1 plants are self-crossed. A total …
  3. 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 …
  4. 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 …
  5. 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 …
  6. genetics

    In tomatoes, the allele T for tall plant height is dominant to dwarf allele t, the P allele for smooth is dominant to the p allele for peach fuzz skin, and the allele R for round fruit dominant to the recessive r allele for oblong …
  7. 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 …
  8. 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 …
  9. Biology

    Which of the following best describes the genotypes of the offspring when Mendel crossed true-breeding (pure-breeding) yellow seed plants with true-breeding green seed plants?
  10. AP Bio

    When pure-breeding red cows are bred with pure breeding white cows, the offspring are roan. The roan cows also have a gene for horn vs. hornless cattle. The allele for horns dominates the allele for hornless. If a bull and cow are …

More Similar Questions

Post a New Question