WorksheetsMeiosis Revision
Total questions: 28
Worksheet time: 28mins
In which phase does crossing-over happen?
Prophase I
Prophase II
Metaphase I
Anaphase II
Mitosis is the same as which of the following?
Meiosis I
Meiosis II
Meiosis III
Crossing Over
What phase is this?
Anaphase II
Telophase I
Telophase II
Anaphase I
The phase of Meiosis in which chromatids separate:
Prophase II
Metaphase II
Telophase II
Anaphase II
The phase in Meiosis in which 2 daughter cells are formed:
Anaphase I
Anaphase II
Telophase I
Metaphase II
The phase of Meiosis in which tetrads are formed:
Prophase I
Metaphase I
Anaphase I
Telophase I
The phase of Meiosis in which homologous pairs line up along the equator:
Anaphase I
Metaphase I
Anaphase II
Metaphase II
WHAT DOES MEIOSIS CREATE?
CHROMOSOMES
GAMETES
DNA
TRAITS
MEIOSIS IS NEEDED BECAUSE...
IT ACTUALLY ISN'T, BUT CAN BE HELPFUL IN SOME ORGANISMS
TO REDUCE THE CHROMOSOME NUMBER BY HALF
SO THAT EVERY CELL IS EXACTLY IDENTICAL
TO MAKE SURE EVERY HUMAN CELL HAS 92 CHROMOSOMES
THE GAMETES ARE CONSIDERED TO HAVE ONE HALF OF THE GENETIC INFO SO IT IS CALL
DIPLOID (2N)
DIPLOID (N)
HAPLOID (2N)
HAPLOID (N)
MALE GAMETE IS KNOWN AS
EGG
SPERM
A FEMALE GAMETE IS KNOWN AS
EGG
SPERM
HOW MANY CHROMOSOMES DO HUMAN GAMETES HAVE?
46
23
47
22
CROSSING OVER ALLOWS FOR WHAT TO HAPPEN?
ALL CELLS TO STAY THE SAME
GENETIC VARIATION
REDUCTION OF CHROMOSOMES
CHROMOSOME NUMBER TO INCREASE
WHEN THE SPERM FERTILIZES THE EGG WHAT IS FORMED
ZYGOTE
EMBRYO
FETUS
FERTILIZATION
WHY ARE THE CHROMOSOMES EVEN NUMBERED FOR ORGANISIMS?
JUST A COINCIDENCE
BECAUSE 75% OF THE INFO COMES FROM MOM AND 25% COMES FROM DAD
BECAUSE 51% OF THE INFO COMES FROM MOM AND 49% COMES FROM DAD
BECAUSE HALF OF THE GENTIC INFORMATION COMES FROM MOM AND HALF COMES FROM DAD
Chromosomes assort independantly, not genes because of the following
The chromosomes contain the genes, genes can't leave the chromosome
The genes contain the chromosomes
It depends on the sex of the offspring
In sexual selection of most organisms the genes will be directed by the DNA to assort independantly
This term refers to the production of gametes by organisms that reproduce sexually
mitosis
binary fission
meiosis
cloning
The term that refers to a cell that has its full or complete number of chromosomes is
diploid
N
gamete
haplpoid
How many TOTAL steps are there in the process of meiosis?
2
4
8
16
Sea turtles have 56 chromosome in their somatic cells. How many chromosomes are in their gametes?
28
56
112
46
What is another term for body cells?
somatic cells
gamete
stem cell
neural cell
In Anaphase I, the _________ are separated by the pulling of the spindle fibers to opposite poles of the cell.
homologous pairs of chromosomes
sister chromatids
centromeres
centrosomes
Check all of the following that DO occur during Telophase I and cytokinesis.
The separated homologous chromosomes are at opposite poles of the cell.
The cell divides in two.
The chromosomes do not uncoil, since they are getting ready for Meiosis II.
Sister chromatids are pulled away from each other.
At the start of Meiosis II, which of the following is NOT true?
There are two cells.
The cells are haploid.
The chromosomes are paired up as homologues.
DNA is present as two sister chromatids joined at the centromere.
