Question

question 12
what is the primary outcome of binary fission in bacteria?
o a four haploid cells
o b two genetically unique daughter cells
o c two identical daughter cells
o d one diploid and one haploid cell
question 13
a student uses gummy worms to model the process of mitosis. the model is shown below.
using the model, which statement correctly explains how mitosis preserves genetic continuity?
o a each daughter cell receives half of its chromosomes from each of the parent cells.
o b the daughter cells receive chromosomes that are recombined from the parent cells
o c each daughter cell receives twice as many chromosomes as the parent cell
o d the daughter cells receive chromosomes that are identical to the parent cell.

Explanation:

Question 12

Binary fission is a form of asexual reproduction in bacteria. In this process, a single - celled organism (bacteria) divides into two cells. Since it is asexual (no genetic recombination from two parents), the two daughter cells are genetically identical to the parent cell.

• Option a: Four haploid cells are produced in meiosis (a type of cell division in eukaryotes, not binary fission in bacteria).
• Option b: Genetic uniqueness is a result of sexual reproduction (like meiosis and fertilization in eukaryotes), not binary fission.
• Option c: Binary fission in bacteria results in two identical daughter cells.
• Option d: Bacteria are prokaryotes and do not have diploid or haploid states in the same sense as eukaryotes (they have a single circular chromosome).

• Option a: In mitosis, daughter cells receive all of their chromosomes from a single parent cell (through DNA replication and equal distribution), not half from each of two parent cells (which would be the case in sexual reproduction).
• Option b: Chromosome recombination occurs in meiosis (for sexual reproduction in eukaryotes), not in mitosis.
• Option c: In mitosis, the daughter cells have the same number of chromosomes as the parent cell (after DNA replication and division).
• Option d: Mitosis involves DNA replication (where the parent cell's DNA is copied) and then the equal distribution of the replicated chromosomes to the two daughter cells. So, the daughter cells receive chromosomes that are identical to the parent cell.

Answer:

c. Two identical daughter cells

Question 13