|
If you have a question, comment or concern, please
email Ms. vB
or call
425.837.7817. |
|
|
|
 |
Meiosis and Gametogenesis |
|
|
|
|
|
4.2.1 |
State that meiosis is a reduction division of a
diploid nucleus to form haploid nuclei. |
|
4.2.3 |
Outline the process of meiosis, including
pairing of homologous chromosomes and crossing
over, followed by two divisions, which results
in four haploid cells. |
|
10.2.4 |
Define linkage group. |
|
10.2.5 |
Explain an example of a cross between two linked
genes. |
|
10.2.6 |
Identify which of the offspring are recombinants
in a dihybrid cross involving linked genes. |
|
10.2.3 |
Explain how crossing over between
non-sister chromatids of a homologous pair in
prophase I can result in an exchange of alleles. |
|
4.2.4 |
Explain that non-disjunction can lead to changes
in chromosome number, illustrated by reference
to Down syndrome (trisomy 21). |
|
4.2.5 |
State that, in karyotyping, chromosomes are
arranged in pairs according to their size and
structure. |
|
4.2.6 |
State that karyotyping is performed using cells
collected by chorionic villus sampling or
amniocentesis, for pre-natal diagnosis of
chromosome abnormalities. |
|
4.2.7 |
Analyze a human karyotype to determine gender
and whether non-disjunction has occurred. |
|
10.1.1 |
Describe the behaviour of the
chromosomes in the phases of meiosis.Outline the
formation of chiasmata in the process of
crossing over. |
|
10.1.2 |
Outline the formation of
chiasmata in the process of crossing over. |
|
10.1.3 |
Explain how meiosis results in an
effectively infinite genetic variety in gametes
through crossing over in prophase I and random
orientation in metaphase I. |
|
10.1.4 |
State Mendel’s law of independent
assortment. |
|
10.1.5 |
Explain the relationship between
Mendel’s law of independent assortment and
meiosis. |
|
11.4.1 |
Annotate a light micrograph of testis tissue to
show the location and function of interstitial
cells (Leydig cells), germinal epithelium cells,
developing spermatozoa and Sertoli cells. |
|
11.4.2 |
Outline the processes involved in
spermatogenesis within the testis, including
mitosis, cell growth, the two divisions of
meiosis and cell differentiation. |
|
11.4.3 |
State the role of LH, testosterone and FSH in
spermatogenesis. |
|
11.4.4 |
Annotate a diagram of the ovary to show the
location and function of germinal epithelium,
primary follicles, mature follicle and secondary
oocyte. |
|
11.4.5 |
Outline the processes involved in oogenesis
within the ovary, including mitosis, cell
growth, the two divisions of meiosis, the
unequal division of cytoplasm and the
degeneration of polar body. |
|
11.4.6 |
Draw and label a diagram of a mature sperm and
egg. |
|
11.4.7 |
Outline the role of the epididymis, seminal
vesicle and prostate gland in the production of
semen. |
|
11.4.8 |
Compare the processes of spermatogenesis and
oogenesis, including the number of gametes and
the timing of the formation and release of
gametes. |
|
11.4.9 |
Describe the process of fertilization, including
the acrosome reaction, penetration of the egg
membrane by a sperm and the cortical reaction. |
|
11.4.10 |
Outline the role of HCG in early
pregnancy. |
|
11.4.11 |
Outline early embryo development
up to the implantation of the blastocyst. |
|
11.4.12 |
Explain how the structure and
functions of the placenta, including its
hormonal role in secretion of estrogen and
progesterone, maintain pregnancy. |
|
11.4.13 |
State that the fetus is supported
and protected by the amniotic sac and amniotic
fluid. |
|
11.4.14 |
State that materials are
exchanged between the maternal and fetal blood
in the placenta. |
|
11.4.15 |
Outline the process of birth and
its hormonal control, including the changes in
progesterone and oxytocin levels and positive
feedback. |
Meiosis:
-
Contrast sexual
with asexual reproduction.
-
Provide an example
of an organism that reproduces sexually /
asexually.
-
What is the
function of meiosis?
-
Define and
compare the number of chromosomes in diploid
versus haploid versus polyploid cells.
-
When during meiosis
is the cell diploid? When does it become
haploid?
-
What is the diploid
and haploid number in humans?
-
What are germ
cells? Gametes?
-
What are homologous
chromosomes? Alleles?
-
What are some
similarities / differences between mitosis and
meiosis?
-
Describe the events
that happen during each phase of meiosis.
-
Identify the
difference between chromosomes, replicated
chromosomes and chromatids
-
What are tetrads?
When during meiosis do they appear in the cell?
-
What is crossing
over? When does it happen?
-
Where does crossing
over occur along the chromosome?
-
What are
recombinant chromosomes?
-
Will linked genes
that are closer together or further apart have
higher rates of crossing over?
-
Why do linked
genes show different phenotypic ratios than
unlinked genes?
Non-disjunction
-
Contrast results of
non-disjunction in meiosis I vs. meiosis II in
terms of the number of chromosomes in the
gametes produced.
-
What are nullisomy,
monosomy, trisomy and polysomy?
-
Understand the
notation of non-disjunction (i.e. 2n-1).
-
Know the number of
chromosomes that are found in individuals with
common diseases that result from non-disjunction
-
Patau syndrome
-
Edward's syndrom
-
Turner’s syndrome
-
Down syndrome
-
Super female
-
Jacob’s syndrome
-
Klinefelter’s
syndrome
Karyotypes
-
Identify autosomes
and sex chromosomes.
-
Identification male
vs. female.
-
Identify
chromosomal diseases (listed above) using a
karyotype.
-
Understand the
notation of karyotypes (i.e. 47, XY, +21).
-
Describe the
karyotyping procedure.
Reproduction:
-
Label parts of male
and female reproductive systems
-
Identify and label
cross sections of testis and ovary
-
Compare oogenesis
with spermatogenesis
-
Describe the
production of semen
-
Describe the
hormonal interactions that lead to the menstrual
cycle in humans
-
Explain the process
of fertilization
-
Draw and label a
diagram of a blastocyst
-
Explain the
hormonal effects of pregnancy and childbirth
-
Describe the
structure and function of the placenta
Sock
chromosome analogy
Meiosis
notes
Independent
assortment and crossing over notes
Crossing
over worksheet
Linked
genes notes
Linked
genes practice problems
Non-disjunction notes
Karyotyping notes
Internet karyotyping activity
Reproduction week
directions
Graphics in
color
|
|
|
