In a parent pea plant with allele pair Gg, what is the probability that one gamete will contain G allele?
If the gamete will get either G or g, the probability will be 1/2 of getting G.
To find the probability of a specific allele appearing in a gamete, we can use Punnett squares.
In this case, the parent pea plant has allele pair Gg, where "G" represents the dominant green allele and "g" represents the recessive yellow allele.
When we create a Punnett square for a Gg parent, we put the alleles for each parent along the top and left side of the square. Since the parent is Gg, we will put "G" along the top and "g" along the left side.
G g
G GG Gg
g Gg gg
Now, we can see that there are two possible types of gametes that can be produced by this parent: one with the G allele and one with the g allele.
Out of the four possible outcomes in the Punnett square, two have the G allele (GG and Gg) and two have the g allele (Gg and gg). Therefore, the probability that a gamete from this parent will contain the G allele is 2 out of 4, or 1/2.
Thus, the probability that one gamete from a parent pea plant with allele pair Gg will contain the G allele is 1/2 or 50%.
To determine the probability of a gamete containing the G allele in a parent pea plant with allele pair Gg, we need to analyze the possible combinations during gamete formation.
First, let's break down the genotype Gg:
- The uppercase "G" represents the dominant allele for green (the color of the pea).
- The lowercase "g" represents the recessive allele for yellow (the color of the pea).
Since each individual has two alleles, there are two possible options for each gamete during formation:
1. The gamete receives the G allele from the parent.
2. The gamete receives the g allele from the parent.
Since the genotype Gg has one G allele and one g allele, there is an equal chance of each allele being passed on to a gamete.
Therefore, the probability of a gamete containing the G allele is 1 out of 2, which can be expressed as 1/2 or 50%.