Indicate whether the sentence or statement is true or false.
The information needed by a cell to direct its activities and to determine its characteristics is contained in molecules of deoxyribonucleic acid (DNA).
Gametes are diploid so that when fertilization occurs, the resulting zygote will have the characteristic number of chromosomes for that species.
A karyotype is a type of gene.
Cell division in bacteria and eukaryotes takes place in precisely the same manner.
Cells spend most of their lifetime in interphase.
After the replication of a cell’s chromatids, there are twice as many centromeres as there are chromosomes.
Asexual reproduction occurs by mitosis.
During telophase, a nuclear envelope surrounds each new set of chromosomes.
Chromatids separate from each other during telophase.
After mitosis and cytokinesis, each new cell has a complete set of the original cell’s chromosomes.
Complete each sentence or statement.
Following replication of its DNA, each chromosome contains two ____________________, which are attached to each other by a centromere.
Chromosomes that are not involved in sex determination are called ____________________.
A picture of a cell’s chromosomes is called a ____________________.
The sequence of events that occurs in a cell from one mitotic division to the next is called the ____________________.
“Cables” made of microtubules that extend from the poles of a cell to the centromeres during cell division are called ____________________.
In mitosis, anaphase follows ____________________.
The stage of meiosis during which homologues line up along the equator of the cell is called ____________________.
The process called ____________________ guarantees that the number of chromosomes in gametes is half the number of chromosomes in body cells.
A reciprocal exchange of corresponding segments of DNA is called ____________________.
As a result of spermatogenesis, ____________________ cells are produced that can all develop into sperm cells. As a result of oogenesis, only ____________________ cell(s) develop(s) into (an) egg cell(s).