chapter 8 Flashcards
(20 cards)
Cancer is usually associated with mutations of genes involved in:
cell division
Somatic cells are produced via _____________ reproduction.
asexual
Which of the following is NOT a characteristic of cancer cells?
are larger than surrounding cells
are larger than surrounding cells
are larger than surrounding cells
During the first step of binary fission in prokaryotes:
the chromosome attaches to a special site on the plasma membrane
The single bacterial chromosome is found in a region of the cell known as:
the nucleoid
At what point during the cell cycle is DNA replicated?
during the S phase
During mitosis, a 2n parent cell nucleus divides to form:
two 2n daughter nuclei
What is the outcome of meiosis I?
homologous chromosomes separate
The exchange of genetic material between non-sister chromatids is called:
crossing-over
In both plant and animal cells, the mitotic spindle is organized by two ___________________.
centrosomes
Which one of the following events occurs during prophase?
nuclear envelope disintegrates
Which phenomenon, along with crossing-over, increases variation, which is a major advantage of sexual reproduction
independent assortment
During Metaphase I of meiosis:
homologous chromosomes line up independently
homologous chromosomes line up independently
During Telophase:
cell plate
Which one of the following structures is NOT associated with animal cell cytokinesis?
cell plate
The three important checkpoints in the cell cycle are ______, ______, and _______.
G1, G2, and M
The interaction between these two types of proteins is an important part of internal signaling control of the cell cycle.
kinases and cyclins
During Anaphase II of meiosis:
sister chromatids separate
The cause of monosomy and trisomy is most likely:
non-disjunction during meiosis
When a segment of a chromosome ends up attached to a non-homologous chromosome, this is called a(n):
translocation
