WorksheetsGAMETOGENESIS
Total questions: 20
Worksheet time: 10mins
If an organism has 24 chromosomes in a body cell, how many will each daughter cell have at the end of meiosis?
6
12
23
24
Which part of meiosis produces diversity in gametes?
DNA replication
Prophase
Crossing-over
Cytokinesis
What is the purpose of meiosis?
to help the organism grow
to repair damaged cells
to heal injuries
to create diversity in offspring
The diploid cell from which a sperm cell is created is a
secondary spermocyte
spermatid
sperm
spermatogonium
The sperm's DNA is found in the
head
midpiece
tail
flagellum
During fertilization, only the head of the sperm enters the ovum, which is why...
all of your mitochondria originate from your father.
the genes you inherit from your father are generally more dominant.
all of your mitochondria originate from your mother.
the sperm is not strong enough to go further.
Which parent's gamete is LESS LIKELY to cause birth defects in the offspring?
The mother is less likely to cause defects because her gamete has a shorter distance to travel.
The mother is less likely to cause defects because her gametes are paused in meiosis I for long periods.
The father is less likely to cause defects because flawed sperm rarely reach the egg.
The father is less likely to cause defects because the flagellum helps to correct DNA mutations.
Where are sperm created?
testes
epididymis
vas deferens
ovaries
How many ova develop as a result of oogenesis?
2
1
4
3
How is the ovum different from a polar body?
The ovum is a larger cell with a greater volume of cytoplasm.
The ovum is smaller with less cytoplasm.
The ovum has a greater amount of DNA.
The ovum has no mitochondria.
Which of the following describes the fate of most polar bodies formed during oogenesis?
No polar bodies are formed during oogenesis.
They will help correct mutations in ovum.
They will be fertilized by a sperm and result in fraternal twins.
They will die/decompose.
Which of the following shows the correct order of stages in oogenesis?
oogonium --> ovum --> secondary oocyte --> primary oocyte
ovum --> secondary oocyte --> primary oocyte --> oogonium
oogonium -> primary oocyte --> secondary oocyte --> ovum
primary oocyte --> oogonium --> ovum --> secondary oocyte
How many eggs are typically released during the period between puberty and menopause?
about 400
about 400,000
about 100
about 30
At what point does the ovum complete meiosis and reach maturity?
Before being released from a mature follicle
At fertilization
After reaching the uterus
At birth all eggs are mature
The creation of ova using the process of meiosis is called
ovasynthesis
oogenesis
spermatogenesis
fertilization
The formation of sperm as a result of meiosis is called
making-a-sperm
fertilization
spermatogenesis
oogenesis
Which type of mutation occurs more frequently due to mistakes in the formation of ova?
chromosomal mutations
genetic mutations
single gene mutations
scrambled eggs
After being released from the ovary, where does the ovum travel?
into the oogonium
directly into the uterus
into the testes
into the fallopian/uterine tubes
If 2 ova are released from the ovaries, and both are fertilized, this will result in
dizygotic twins
monozygotic twins
identical twins
conjoined twins
Why are mistakes in gamete formation and maturity more common for the creation of eggs?
Oocytes are paused in meiosis I for years.
Oocytes have more genetic information than sperm.
The proteins in eggs can be denatured at normal body temperature.
Oocytes are damaged during fertilization.
