BYUI Unit 2 Genetics Bio 181 Test Questions with Answers
Graded A+
alternation of generations - -a life-cycle results in four haploid cells
type in which the diploid and haploid stages
alternate
Meiosis I - -the first round of meiotic cell
division; referred to as reduction division because
chiasmata (chiasma) - -the structure that the ploidy level is reduced from diploid to haploid
forms at the cross over points after genetic
material is exchanged
Meiosis II - -the second round of meiotic
cell division following meiosis I; sister chromatids
cohesin - -proteins that form a complex are separated from each other, and the result is
that seals sister chromatids together at their four unique haploid cells
centimetres until anaphase
recombination nodules - -protein
Crossover - -exchange of genetic material assemblies formed on the synaptonemal complex
between non-sister chromatids resulting in that mark the points of crossover events and
chromosomes that incorporate genes from both mediate the multistep process of genetic
parents of the organism recombination between non-sister chromatids
Fertilization - -union of 2 haploid cells from reduction division - -a nuclear division that
2 individual organisms produces daughter nuclei each having one-half
as many chromosome sets as the parental
nucleus; meiosis I is a reduction division
gametophyte - -The multicellular haploid
life cycle stage that produces gametes
somatic cell - -all the cells of a multicellular
organism except the gametes or reproductive
germ cells - -specialized cell line that cells
produces gametes, such as sperm and egg
spore - -haploid cell that can produce a
Interkinesis (Interphase II) - -brief period of haploid multicellular organism or can fuse with
rest between meiosis I and meiosis II another spore to form a diploid cell
life cycle - -the sequence of events in the sporophyte - -a multicellular diploid life
development of an organism and the production cycle stage that produces haploid spores by
of cells that produce offspring meiosis
Meiosis - -a nuclear division process that synapsis - -the formation of a close
association between homologous chromosomes
1/6
, BYUI Unit 2 Genetics Bio 181 Test Questions with Answers
Graded A+
during prophase I
Cytokinesis - -the physical separation of
the cytoplasmic components into 2 daughter cells
synaptonemal complex - -protein lattice occurs without reformation of the nuclei
that forms between homologous chromosomes
during prophase I, supporting crossover
the symptonemal complex forms during what
stage of meiosis? - -prophase I
tetrad - -two duplicated homologous
chromosomes (four chromatids) bound together
by chiasmata during prophase I During which phase of meiosis do homologous
chromosomes align at the center of the cell and
independent assortment occurs? - -
asexual reproduction - -type of metaphase I
reproduction where unicellular organisms and a
few multicellular organisms can produce
genetically identical clones of themselves During which phase of meiosis are sister
chromatids separated? - -anaphase II
sexual reproduction - -involves the
production by parents of 2 haploid cells and the During which phase of meiosis does crossing
fusion of these to form a single, genetically over occur to produce genetic diversity? - -
recombined diploid self creates a genetically prophase I
unique organism
The cleavage furrow forms and 4 haploid cells
Haploid - -cells that contain a single set of are formed. This occurs during.... - -
chromosomes telophase of meiosis II
diploid - -cells containing 2 sets of what is the product of meiosis? - -4 haploid
chromosomes cells
homologous chromosomes - -matched 4 gametes are produced with with the haploid
pairs containing the same genes in identical number of chromosomes. This statement is true
locations along their lengths. for.... - -meiosis II only
metaphase plate - -An imaginary structure in th animal sexual life cycles, meiosis produces
located at a plane midway between the two poles gametes, and fertilization produces what? -
of a cell in metaphase on which the centromeres -zygotes
of all the duplicated chromosomes are located.
2/6
Graded A+
alternation of generations - -a life-cycle results in four haploid cells
type in which the diploid and haploid stages
alternate
Meiosis I - -the first round of meiotic cell
division; referred to as reduction division because
chiasmata (chiasma) - -the structure that the ploidy level is reduced from diploid to haploid
forms at the cross over points after genetic
material is exchanged
Meiosis II - -the second round of meiotic
cell division following meiosis I; sister chromatids
cohesin - -proteins that form a complex are separated from each other, and the result is
that seals sister chromatids together at their four unique haploid cells
centimetres until anaphase
recombination nodules - -protein
Crossover - -exchange of genetic material assemblies formed on the synaptonemal complex
between non-sister chromatids resulting in that mark the points of crossover events and
chromosomes that incorporate genes from both mediate the multistep process of genetic
parents of the organism recombination between non-sister chromatids
Fertilization - -union of 2 haploid cells from reduction division - -a nuclear division that
2 individual organisms produces daughter nuclei each having one-half
as many chromosome sets as the parental
nucleus; meiosis I is a reduction division
gametophyte - -The multicellular haploid
life cycle stage that produces gametes
somatic cell - -all the cells of a multicellular
organism except the gametes or reproductive
germ cells - -specialized cell line that cells
produces gametes, such as sperm and egg
spore - -haploid cell that can produce a
Interkinesis (Interphase II) - -brief period of haploid multicellular organism or can fuse with
rest between meiosis I and meiosis II another spore to form a diploid cell
life cycle - -the sequence of events in the sporophyte - -a multicellular diploid life
development of an organism and the production cycle stage that produces haploid spores by
of cells that produce offspring meiosis
Meiosis - -a nuclear division process that synapsis - -the formation of a close
association between homologous chromosomes
1/6
, BYUI Unit 2 Genetics Bio 181 Test Questions with Answers
Graded A+
during prophase I
Cytokinesis - -the physical separation of
the cytoplasmic components into 2 daughter cells
synaptonemal complex - -protein lattice occurs without reformation of the nuclei
that forms between homologous chromosomes
during prophase I, supporting crossover
the symptonemal complex forms during what
stage of meiosis? - -prophase I
tetrad - -two duplicated homologous
chromosomes (four chromatids) bound together
by chiasmata during prophase I During which phase of meiosis do homologous
chromosomes align at the center of the cell and
independent assortment occurs? - -
asexual reproduction - -type of metaphase I
reproduction where unicellular organisms and a
few multicellular organisms can produce
genetically identical clones of themselves During which phase of meiosis are sister
chromatids separated? - -anaphase II
sexual reproduction - -involves the
production by parents of 2 haploid cells and the During which phase of meiosis does crossing
fusion of these to form a single, genetically over occur to produce genetic diversity? - -
recombined diploid self creates a genetically prophase I
unique organism
The cleavage furrow forms and 4 haploid cells
Haploid - -cells that contain a single set of are formed. This occurs during.... - -
chromosomes telophase of meiosis II
diploid - -cells containing 2 sets of what is the product of meiosis? - -4 haploid
chromosomes cells
homologous chromosomes - -matched 4 gametes are produced with with the haploid
pairs containing the same genes in identical number of chromosomes. This statement is true
locations along their lengths. for.... - -meiosis II only
metaphase plate - -An imaginary structure in th animal sexual life cycles, meiosis produces
located at a plane midway between the two poles gametes, and fertilization produces what? -
of a cell in metaphase on which the centromeres -zygotes
of all the duplicated chromosomes are located.
2/6
