G1--- the cell is growing up feeding for 1
S-- the cell starts to repucate the chromosomes
G2--- the cell is growing for 2
The correct answer is option b, that is, a polygenic trait that is affected by the number of alleles present.
There are three genes associated with a usual form of glaucoma, so it must be the polygenic trait, that is, it comprises more than one gene. The polygenic traits are affected by the number of alleles. In this circumstance, there are more than twenty genetic loci present, which signify that there must be a larger quantity of alleles for all the loci.
They re called granum singular and grana plural
Answer and Explanation:
Hello. I believe you want to know the result of a cross between a tall pea plant and a low pea plant. Well, to visualize the cross between these two plants, it is necessary to know which characteristics have the dominant and recessive alleles, as you did not mention, let's assume that the high plant has the dominant characteristic that will be represented by the "TT" alleles, while the low pea plant will have the recessive characteristic, represented by the "tt" allele.
A dominant characteristic is one that has dominant alleles in its composition. These alleles are represented by capital letters and signify the genes that determine a characteristic. The characteristic of a dominant allele will always be seen in the offspring of a cross, as long as that allele appears in hom0zygosis (two dominant alleles as "TT") or hetorozygosis (a dominant allele and a recessive allele as "Tt"). The characteristic of the recessive allele, on the other hand, will only be seen in the offspring of a cross, if it is presented in hom0zygosis (two recessive alleles as "tt").
In the figure that is attached below, you can see how a high pea plant (TT) crosses with a low pea plant (tt). This crossing is done by combining each allele of the tall plant with each allele of the plant, which resulted in a completely heterozygous offspring, with the "Tt" alleles. As mentioned above, the recessive characteristic only appears if there are two recessive alleles. In this case, we can consider that the entire offspring were tall pea plants, since all plants have the dominant allele.