In one type of plant, orange petals (O) are dominant over yellow petals (o) and tall stems (T) are dominant over short stems (t). Complete a dihybrid cross for parents with the genotypes: OOTt × OoTt and answer the following in complete sentences.
How you would set up a Punnett square for this cross.
What are the likelihood of each possible offspring genotype.
What are likelihood of each possible offspring phenotype.
Help please, @ParthKohli or @Luigi0210 ?
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Do you think that you could explain it, please? @Rushwr
Yes. I have it opened up right now, but I'm kinda confused due to the different letters you used.
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The whole thing tbh.
I don't really know how to pin point where I'm confused exactly.
Is this FLVS?
Ok what module is this in because I am in Biology I now and have done something like this before
3.04 Heredity Patterns.
Ok I have done the quiz for 03.04 and got a 91. The essay question I had is not the exact same question but very similar. Would that help?
I guess so. May I have a look at it, please?
Sure here it is:
In some bees, thin stripes (S) are dominant over thick stripes (s) and black eyes (B) are dominant over gray eyes (b). Complete a dihybrid cross for parents with the genotypes: SsBB x ssBb and answer the following in complete sentences. (5 points)
1. Describe how you would set up a Punnett square for this cross.
2. List the likelihood of each possible offspring genotype.
3. List the likelihood of each possible offspring phenotype.
To start off, I wrote down the parents' genotypes and the meaning of each letter, which was given in the problem. Next I identified all of the possible gametes, by pairing each letter in a genotype with an opposite letter in the same genotype. For example in the genotype SsBB the possible gametes are SB, SB, sB, and sB. For the genotype ssBb the possible gametes are sB, sb, sB, and sb. I then set up a four by four square with the possible gametes from each genotype on each side. I then began filling out the table by writing the alleles contributed by each corresponding gamete. This means that I wrote the letters from the column and the letters in the row. The last thing for me to do is to determine the results. Each Punnett square is equal to 6.25% or 1/16. Knowing this I can figure out that the genotypes are 25% SsBB, 25% sBB, 25% SsBb, and 25% ssBb. I can also figure out from the meanings of the letters that 50% of the bees have thin stripes and black eyes and the other 50% of them have thick stripes and black eyes. Since black eyes is dominant and grey eyes are recessive, the bees will exhibit the dominant trait of black eyes by 100%. The next generation of bees might show the recessive trait where some bees will have grey eyes.