Bio-189 Final Exam Questions and All
Correct Answers.
An Allele is ___ if its effect masks that of a ___ allele paired with it. - Answer
Dominant;Recessive
In humans, skin color is controlled by several genes. Thus, skin color is a(n) ___ characteristic. -
Answer Polygenic
In a pedigree chart, a female showing the specific trait being studied is indicated by a ___. -
Answer Darkened circle
Achondroplasia, a hereditary form of dwarfism, is an autosomal dominant disorder; however
homozygous dominant individuals either die before birth or very shortly thereafter. The
homozygous recessive condition is normal. A dwarf couple decided to have children. Use this
information to answer the following question:
Of the children of this couple who survive, what is the probability that they will be affected by
achondroplasia? - Answer 2/3
When two alleles of the same gene are identical, the individual carrying those alleles is said to
be ___. - Answer Homozygous
For this problem, you may want to create a punnett square on a seperate piece of paper.
Assume brown eyes are dominant to blue eyes and dimples are dominant to no dimples. John
has brown eyes, and his mother has blue eyes. John does not have dimples. Zena has blue eyes
and also has no dimple. What are the chances if this couple have children, they will produce a
child with blue eyes and no dimple? - Answer 1/2
In a cross of DDRR individual with a ddrr individual, the genotype of all offspring will___. -
Answer DdRr
In cats, short hair (L) is dominant to long hair (l). If a short haired cat of unknown genotype is
crossed with a long-haired animal, and they produce one long-haired kitten and one short-
haired kitten, this would indicate that ___. - Answer The short-haired cat was not true
breeding.
Observable traits are known in genetics as ___. - Answer Phenotypes
Nuclear envelopes reform during ___. - Answer Telophase
, Asexual reproduction ___. - Answer produces genetic clones
Paired homologous chromosomes are found at the center of the cell during ___ of meiosis. -
Answer Metaphase I
In meiosis, ___ are separated during anaphase I, and ___ are separated during anaphase II -
Answer Homologous chromosomes; Sister chromatids
Abnormal cell division that does not pose a threat to surrounding tissues is termed___. -
Answer Benign
After meiosis, resulting daughter cells will contain ___. - Answer Half the numbers of
chromosomes than the parent cell carriers.
Chromosomes are aligned at the middle of the cell during ___. - Answer Metaphase
HeLa cells were critical in ___. - Answer developing the polio vaccine
Meiosis produce ___. - Answer Sperm and egg cells
Which event occurs during interphase? - Answer The cell doubles its cytoplasmic contents.
What are the non-coding segments of DNA called? - Answer Introns
In order to visualize the DNA for karyotype, ___. - Answer DNA is stained to visualize the
DNA
What does DNA ligase do? - Answer seals gaps between assembled nucleotides
After DNA replication, each chromosome contains two sister ___. - Answer Chromatids
Amino acids are carried to ribosomes by ___ RNA - Answer transfer
The information from messenger RNA is used to create a polypeptide sequence during the
process of ___. - Answer translation
In the nucleotide sequence ACTGG, what does C stad for? - Answer Cytosine
Correct Answers.
An Allele is ___ if its effect masks that of a ___ allele paired with it. - Answer
Dominant;Recessive
In humans, skin color is controlled by several genes. Thus, skin color is a(n) ___ characteristic. -
Answer Polygenic
In a pedigree chart, a female showing the specific trait being studied is indicated by a ___. -
Answer Darkened circle
Achondroplasia, a hereditary form of dwarfism, is an autosomal dominant disorder; however
homozygous dominant individuals either die before birth or very shortly thereafter. The
homozygous recessive condition is normal. A dwarf couple decided to have children. Use this
information to answer the following question:
Of the children of this couple who survive, what is the probability that they will be affected by
achondroplasia? - Answer 2/3
When two alleles of the same gene are identical, the individual carrying those alleles is said to
be ___. - Answer Homozygous
For this problem, you may want to create a punnett square on a seperate piece of paper.
Assume brown eyes are dominant to blue eyes and dimples are dominant to no dimples. John
has brown eyes, and his mother has blue eyes. John does not have dimples. Zena has blue eyes
and also has no dimple. What are the chances if this couple have children, they will produce a
child with blue eyes and no dimple? - Answer 1/2
In a cross of DDRR individual with a ddrr individual, the genotype of all offspring will___. -
Answer DdRr
In cats, short hair (L) is dominant to long hair (l). If a short haired cat of unknown genotype is
crossed with a long-haired animal, and they produce one long-haired kitten and one short-
haired kitten, this would indicate that ___. - Answer The short-haired cat was not true
breeding.
Observable traits are known in genetics as ___. - Answer Phenotypes
Nuclear envelopes reform during ___. - Answer Telophase
, Asexual reproduction ___. - Answer produces genetic clones
Paired homologous chromosomes are found at the center of the cell during ___ of meiosis. -
Answer Metaphase I
In meiosis, ___ are separated during anaphase I, and ___ are separated during anaphase II -
Answer Homologous chromosomes; Sister chromatids
Abnormal cell division that does not pose a threat to surrounding tissues is termed___. -
Answer Benign
After meiosis, resulting daughter cells will contain ___. - Answer Half the numbers of
chromosomes than the parent cell carriers.
Chromosomes are aligned at the middle of the cell during ___. - Answer Metaphase
HeLa cells were critical in ___. - Answer developing the polio vaccine
Meiosis produce ___. - Answer Sperm and egg cells
Which event occurs during interphase? - Answer The cell doubles its cytoplasmic contents.
What are the non-coding segments of DNA called? - Answer Introns
In order to visualize the DNA for karyotype, ___. - Answer DNA is stained to visualize the
DNA
What does DNA ligase do? - Answer seals gaps between assembled nucleotides
After DNA replication, each chromosome contains two sister ___. - Answer Chromatids
Amino acids are carried to ribosomes by ___ RNA - Answer transfer
The information from messenger RNA is used to create a polypeptide sequence during the
process of ___. - Answer translation
In the nucleotide sequence ACTGG, what does C stad for? - Answer Cytosine
