Key ideas
Chapter 1 page324
1. Identify the primary mechanism for genetic change and
differences among organisms? Mutation is a change in the structure or
amount of the genetic differences among organisms
originate as some kind of genetic mutation.
2. List the kinds of mutations? mutations as change in DNA point mutation
A. Insertion or deletion.
B. Mutations as changes in results of gene.
C. Silent mutation.
D. Messene mutation.
E. Frameshipft mutation.
F. Nonsense mutation.
G. More or fewer amino acids.
H. Chromosomal mutation.
I. Detection.
J. Inversion.
K. Translocation.
L. Gene rearrangement.
3. Relate the possible kinds of mutations to their effects? Because of
the way DNA is translated, a mutation can have many possible effects. A
small change in DNA may affect just one amino acid in the protein that
result from a gene.
4. Relate changes in chromosome number to possible results? in
eukaryotic cells, the process of meiosis creates the change of mutations at
the chromosomes pair up and may underage crossover, usually ,the result is
an equal exchange of alleles between homologues chromosomes.
5. Evaluating and significance compare DNA mutations with
chromosomal mutations in terms of the severity of the results of
each? DNA and chromosomes are involved in many processes, so there are
many kinds of mutation. Changes in a DNA sequence may affect the results
of genes much way.