BIO 121 GENETICS CLASS VERSION QUESTIONS
WITH COMPLETE SOLUTIONS
-are all of the cells in your body other than eggs and sperm.-
skin cells, liver
-cells, kidney cells are examples of somatic cells Correct
Answers SOMATIC CELLS
-Each chromosome has a constriction point called a
CENTROMERE
- specialized region that is an attachment for microtubules
during mitosis and meiosis.
-The centromere divides the chromosome into two sections or
ARMS Correct Answers Centromere
1 pair of chromosomes (homologous pair) Correct Answers 2
sets of chromosomes, 2 copies of chromosome 1.
A diploid (2N) cell from an individual that is heterozygous for
alleles at many genetic loci undergoes meiosis followed by
cytokinesis. This results in: Correct Answers four genetically
distinct haploid cells. Meiosis and cytokinesis result in four
haploid cells. If the individual is not completely homozygous for
all loci, the daughter cells will be genetically distinct (i.e. each
will have a unique combination of alleles).
A diploid (2N) cell undergoes a mitotic nuclear division
followed by cytokinesis. This results in: Correct Answers two
genetically identical diploid cells
,A diploid cell 2N=12 undergoes meiosis. How many
chromosomes are present in each of the resulting cells? Correct
Answers 6. Meiosis produces four cells with half the number of
chromosomes of the original cell.
Alleles Correct Answers ALLELES are different versions of the
same gene (that arise due to mutations/changes in the sequence
of nucleotides)
.•Alleles are responsible for variation in inherited traits (or
variation in PHENOTYPE -observable characteristic of an
organism
Alleles-Sickle cell disease Correct Answers For example, sickle
cell disease is caused by a SNiP in the ß-globin gene.
•The 6th amino acid in the chain is valine instead of glutamic
acid affecting the shape (and function) of the hemoglobin
protein (oxygen-carrying protein).•Outcome is red blood cells
that are sickle-shaped.
•Negative affects on oxygen carrying capacity.
Autosome Correct Answers non-sex chromosomes
Can a haploid cell undergo mitosis? How about meiosis?
Correct Answers A haploid cell can undergo mitosis and the
result will be 2 genetically identical versions of the parent cell
(haploid). A haploid cell CANNOT undergo meiosis as the
gametes in meiosis will have half the chromosome number.
, causes it to produce adenine rather than guanine. kermode bear
Correct Answers
Chromosome equation for human gamete cells Correct Answers
1=ploidy (how many sets of chromosomes there are)
n= Haploid number=number of chromosomes in gamete
23 = total number of chromosomes in cell
Chromosome example images (refer to slide) replicated vs
unreplicated Correct Answers
Chromosomes and their homologs align at the equator of the cell
during which stage of meiosis? Correct Answers metaphase I.
For metaphase I, homologous chromosomes are on either side of
the metaphase plate. For metaphase II, sister chromatid are on
either side of the metaphase plate.
Chromosomes Correct Answers Chromosomes carry genetic
information in the form of genes. a threadlike structure of
nucleic acids and protein found in the nucleus of most living
cells, carrying genetic information in the form of genes.
Dark oval is the nucleus. Correct Answers How to find the
nucleus?
Diploid cells are created by Correct Answers MITOSIS
DNA & Histone Proteins
(zoom in on a chromosome) Correct Answers .an
UNREPLICATED chromosome is one condensed molecule of
DNA, plus organizing histone proteins.
WITH COMPLETE SOLUTIONS
-are all of the cells in your body other than eggs and sperm.-
skin cells, liver
-cells, kidney cells are examples of somatic cells Correct
Answers SOMATIC CELLS
-Each chromosome has a constriction point called a
CENTROMERE
- specialized region that is an attachment for microtubules
during mitosis and meiosis.
-The centromere divides the chromosome into two sections or
ARMS Correct Answers Centromere
1 pair of chromosomes (homologous pair) Correct Answers 2
sets of chromosomes, 2 copies of chromosome 1.
A diploid (2N) cell from an individual that is heterozygous for
alleles at many genetic loci undergoes meiosis followed by
cytokinesis. This results in: Correct Answers four genetically
distinct haploid cells. Meiosis and cytokinesis result in four
haploid cells. If the individual is not completely homozygous for
all loci, the daughter cells will be genetically distinct (i.e. each
will have a unique combination of alleles).
A diploid (2N) cell undergoes a mitotic nuclear division
followed by cytokinesis. This results in: Correct Answers two
genetically identical diploid cells
,A diploid cell 2N=12 undergoes meiosis. How many
chromosomes are present in each of the resulting cells? Correct
Answers 6. Meiosis produces four cells with half the number of
chromosomes of the original cell.
Alleles Correct Answers ALLELES are different versions of the
same gene (that arise due to mutations/changes in the sequence
of nucleotides)
.•Alleles are responsible for variation in inherited traits (or
variation in PHENOTYPE -observable characteristic of an
organism
Alleles-Sickle cell disease Correct Answers For example, sickle
cell disease is caused by a SNiP in the ß-globin gene.
•The 6th amino acid in the chain is valine instead of glutamic
acid affecting the shape (and function) of the hemoglobin
protein (oxygen-carrying protein).•Outcome is red blood cells
that are sickle-shaped.
•Negative affects on oxygen carrying capacity.
Autosome Correct Answers non-sex chromosomes
Can a haploid cell undergo mitosis? How about meiosis?
Correct Answers A haploid cell can undergo mitosis and the
result will be 2 genetically identical versions of the parent cell
(haploid). A haploid cell CANNOT undergo meiosis as the
gametes in meiosis will have half the chromosome number.
, causes it to produce adenine rather than guanine. kermode bear
Correct Answers
Chromosome equation for human gamete cells Correct Answers
1=ploidy (how many sets of chromosomes there are)
n= Haploid number=number of chromosomes in gamete
23 = total number of chromosomes in cell
Chromosome example images (refer to slide) replicated vs
unreplicated Correct Answers
Chromosomes and their homologs align at the equator of the cell
during which stage of meiosis? Correct Answers metaphase I.
For metaphase I, homologous chromosomes are on either side of
the metaphase plate. For metaphase II, sister chromatid are on
either side of the metaphase plate.
Chromosomes Correct Answers Chromosomes carry genetic
information in the form of genes. a threadlike structure of
nucleic acids and protein found in the nucleus of most living
cells, carrying genetic information in the form of genes.
Dark oval is the nucleus. Correct Answers How to find the
nucleus?
Diploid cells are created by Correct Answers MITOSIS
DNA & Histone Proteins
(zoom in on a chromosome) Correct Answers .an
UNREPLICATED chromosome is one condensed molecule of
DNA, plus organizing histone proteins.
