4 pretty simple questions if I could get some help! Thanks!! Just need to be sur

Question

4 pretty simple questions if I could get some help! Thanks!! Just need to be sure.
1. In humans and chimpanzees, the ability to taste phenylthiocarbamide (ptc) is dominant to inability to taste it. The cell of a heterozygote is shown in model 2. Assuming the T allele is located on the large submetacentric chromosome indicated by the black line, mark the location of the "T" and "t" alleles in model 2 top picture. How many T and how many t alleles would this cell have at anaphase I of meiosis?
2 in humans, having attached earlobes is recessive to having free earlobes. The cell of a heterozygote is shown in model 2. Assuming the E allele is located on the small metacentric chromosome indicated by the black line, mark the location of the "E" and "e" alleles in model 2
3. Mark the location of the "T","t","E","e" alleles in all the circles in model 2.
4. If there were no crossing over during meiosis, how many different kinds of gametes will be produced? List them all. Model 2 -Segregation and Independent Assortment of chromosomes during meiosis Using the diagrams above, your textbook, and your note set, answer the following questions. 1. What are homologous chromosomes?

Explanation / Answer

1. In the given cell, 2n = 4 and the cell is heterozygous. At anaphase I, the number of chromosomes becomes 4n because the number of chromosomes doubles. Thus, the number of dominant (T) alleles will be 2N and the number of recessive alleles (t) will be 2N means, 4.

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