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37 Cards in this Set

  • Front
  • Back
Cell division in bacteria and eukaryotes takes place in precisely the same manner. T/F`
Cancer is a disease characterized by uncontrolled cell division T/F
A karyotype is a type of gene.T/F
Doen syndrome occurs as a result of nondisjunction of chromosome 21 during cell division, T/F
Genes on chromosomes are the units of inheritance. T/F
Cells spend most of their lifetime in interphase. T/F
Human sperm and egg cells have 23 chromosomes. T/F
After mitosis and cytokinesis each new cell has a complete set of the parent cell chromosomes. T/F
A student can study a karyotype to learn about the
number and structure of the chromosomes in a somatic cell.
If non disjunction occurs,
a gamete will recveive too many or too few homologues of a chromosome.
A mutation caused by a piece of DNA breaking away from its chromosome and becoming attached to a nonhomologous chromosome is called
Trisomy is a mutation that results in a cell having an extra
The point at which two chromatids are attached to each other in a chromosome is called a(n)
The cell cycle is monitored as each cell passes through
Whcih of the following show the correct sequence of the cell cycle?
G1 S G2 M C
The chromosomes in your body
exist in 23 pairs in all cells but gametes
b. each contain thousands of genes
c. form right before cells divide
Chromatids are
. joined strands of duplicated genetic material
A diploid cell is one that
a. has two honlogues of each chromosome
b. is designated by the symbol 2n
c. has chromosomes found in pairs
Hoew many chromosomes are in the body cells of an organism that has a haploid number of 8?
The phase of mitosis that is characterized by the arrangement of all chromosomes along the equator of the cell is called
In humans, the male determines the sex of the child because males have
One x and one y chromosomes
In humans, gametes contain
22 autosomes and 1 sex chromosomes
The first three phases of the cell cycle are collectively known as
People with Down syndrome have
47 chromosomes
Binary fission
is the process by which bacteria reproduce
Mitosis is the process by which
a. microtubules are assembled
b. cytoplasm is divided
c. the nucleus is divided into two nuclei
d. the cell rests
the nucleus is divided into two nuclei
The synthesis (S) phase is charaterized by
DNA replication
Normal human males develop from fertilized eggs containing which of the following sex chromosomes
What are the chromosomes for Turner's syndrome?
In humans, the specific condition caused by an extra chromosome 21 is called
Down syndrome
A picture of a cell's chromosomes is called a(n)
Fertilization of the haploid sperm and egg results in the restoration of the _______________ number of chromosomes in the zygote
Chromosomes that are not involved in sex determination are called _____________________
A fertilized egg is called a(n)
In humans, the genotype XX results in a
What is the difference between a somatic cell and an autosome?
A "somatic" cell is a chromosome that is not a sex cell ( bone, liver) and a autosomes are pairs of chromosomes not involved in determining sex
Describe the four stages of mitosis. (Short Answer)
4 stages of Mitosis