Question

1. during anaphase:

a) centromeres that hold the sister chromatids together split apart into two identical independent chromosomes
b) separated chromosomes are pulled by spindle to opposite poles of cell
c) the nuclear envelope/membrane and nucleolus reassemble.
d) all of the above are events during anaphase
e) only the events described in a) and b) occur in anaphase

1. what process results in the exact duplication of dna?

a) metaphase
b) prophase
c) dna replication
d) protein synthesis

1. the dna segment that carries information for building one protein or polypeptide chain is called a(n) ________.

a) codon
b) anticodon
c) gene
d) amino acid

Explanation:

Question 15:

During anaphase of cell - division, centromeres split and sister chromatids separate into individual chromosomes which are then pulled to opposite poles by the spindle fibers. The re - assembly of the nuclear envelope and nucleolus occurs in telophase.

Question 16:

DNA replication is the process that results in the exact duplication of DNA. Metaphase and prophase are stages of cell - division and protein synthesis is the process of making proteins from mRNA.

Question 17:

A gene is a DNA segment that contains the information for building one protein or polypeptide chain. A codon is a triplet of nucleotides in mRNA, an anticodon is on tRNA, and an amino acid is the building block of proteins.

Answer:

1. e) Only the events described in a) and b) occur in anaphase
2. c) DNA replication
3. c) Gene