One person picks out one of the two beans from their own cup represents what event : anaphase, metaphase 2 , anaphase 1 or fertilization?

Question

1. the previous answer I marked for what the black bean in the cup represents is the dominant allele while the white bean is the recessive allele. So both beans in the cup would possibly be a genotype.
2. a follow up question would be: the combing of the two people’s bean would represent what: anaphase, anaphase 1, metaphase 2, or fertilization?

Answer 1

Hi, Keke!

From what I understand, in the question you are talking about, a cup represents a cell and the beans represent the two copies the cell has of a certain gene. If my understanding is accurate, then I believe that removing one of the beans represents anaphase I of meiosis.

Here's why:

Anaphase I is the stage of meiosis where the parent cell splits for the first time. During anaphase I, one copy of each gene is sorted into a separate daughter cell. In other words, while the parent cell starts with one copy of the gene from each parent, one daughter cell ends up with the mom's gene while the other daughter cell ends up with the dad's gene. Thus, you can represent this (I guess) as removing one of two beans from a cup.

Metaphase II would involve DNA lining up in the middle of the cell during the second part of meiosis. Anaphase without a roman numeral after it refers to anaphase of mitosis as opposed to meiosis. In mitosis, each daughter cell ends up with a copy of each gene.

Combining two people's beans would represent creating a new cell with a gene from each parent, like when the sperm contributes its DNA to the egg during fertilization.

I hope that helps!

Beth