Activities
Cell Division
Chapters 12-15
• Is this one n or 2n?
• Identify
– chromatid
– centromere
– chromosome arm
Identify the parts pointed at
• name the stage
• what stages
come before and
after this one?
what organism is
this tissue from?
E
name the stages A-E
which of these is not
an M stage?
B
C
F
where in the plant you
find this tissue?
what is "F"?
D
A
• name the stage
• what stage comes
before and after it?
• if this is a somatic
cell and n=10,
how many chromosomes
will it have?
• name the stage
• is it part of mitosis?
• give a visible characteristic.
• what happens during
this stage, why is it important?
• Is this cell going through
mitosis or meiosis?
• How do you know?
• Is this cell going through
mitosis or meiosis?
• How do you know?
• What specific stage is it in?
• What special process is
going on?
• What is the importance of it?
• zsdvsfbdb
Is this mitosis or meiosis?
Name all the stages.
If 2n= 20 what is the number of chromosomes on each stage?
What type of cell will this occur in?
B
•
•
•
•
•
•
Name the form of cell division
seen here.
What is the name of the process
seen in the second picture? (D)
What stage of meiosis does the
second picture represent?
Why is 'D' important for human
race and species in general?
Name the stages with letters C
&E
Determine the number (n or 2n)
of chromosomes in B, C and E.
A
D
E
n or 2n?
n or 2n?
n or 2n?
C
•
•
•
•
•
What is a homozygous?
What is a heterozygous?
what is a dominant allele?
What is a recessive allele?
What is complete dominance, incomplete dominance
and codominance?
• What is F1 and F2?
• Using the letter R, draw a Punnett square with a
homozygous dominant and a homozygous recessive and
find the F1.
Law of Segregation
PP
• P= dominant and p=ressesive
• using the symbols given:
– fill in the blanck spaces with the
proper symbols
– what is the genotype of each of
the F1?
– Using two heterozygotes of F1,
make a Punnet square and find
the F2.
– What are the proportions of the
phenotype in the F2?
– What are the proportions of the
genotype in F2?
F1
F2
pp
Law of Independant
Assortment
• Fill in the gametes and Punnett
square
• What are the genotype and
phenotype of F1?
• What are the proportions of the
genotype and phenotype of F2?
YYRR
yyrr
F1
F2
Incomplete
dominance
• Write down the symbols of each
generation (P, F1 and F2)
• Write down the genotypes and
gametes produced by P and F1.
• Fill in the gametes in the Punnett
square and find out the genotypes
and their proportions of the possible
F2 offspring.
Codominance
• Put the possible
gametes of generation
P, both of blood type
AB+
• Find out the genotype
and phenotype of the F1
• Deternime the
proportions of each one
of the phenotypes of F1.
• what is the difference between the next
gene mutations
– Deletion
– Duplication
– Inversion
– reciprocal translation
define:
• syndrome
• disorder
• aneuploid
• trisomic
• oogenesis