If we have two same seeds white and Red then a question asks the dominant allele and recessive allele the seeds have got same nmber how do l do that question

Biology

ScanSolve AI Answer

Step-by-step solution

3 steps

To determine which allele is dominant and which is recessive for seed color (white vs. red), you cannot simply tell by looking at the seeds or knowing they have the "same number" of alleles. You need to perform a genetic cross.

Here's how you would do it:

  1. Obtain true-breeding (homozygous) parent plants for both white seeds and red seeds.

    This means that if you self-pollinate a true-breeding red seed plant, all its offspring will produce red seeds, and the same for white.

  2. Perform a cross between these two true-breeding parent plants.

    For example, cross a true-breeding red-seeded plant with a true-breeding white-seeded plant. This is called the P (parental) generation cross.

  3. Observe the color of the seeds produced by the offspring of this cross (the F1 generation).

    *   If **all** the F1 generation seeds are red, then the allele for **red** seed color is **dominant**, and the allele for **white** seed color is **recessive**.
    *   If **all** the F1 generation seeds are white, then the allele for **white** seed color is **dominant**, and the allele for **red** seed color is **recessive**.
    

    The trait that is expressed in the F1 generation when two true-breeding parents with contrasting traits are crossed is always the dominant trait. The trait that is hidden in the F1 generation is the recessive trait.

Was this helpful?

Still stuck on this one?

Ask a follow-up, and the answer starts from this question.

Got a different question?Ask your own question