Transcript Standard S7L3. Students will recognize how biological traits are

Response Page
In Labrador dogs the brown fur allele is
dominant to the yellow fur allele.
On your RP make a punnett square to cross
a heterozygous brown with a homozygous
yellow. What would the phenotypes and
genotypes be of the puppies?
• Write this
• Bb x bb
•
B
b
Bb
bb
Bb
bb
b
•
•
• .
b
 No Response page today. Read
over your Balderdash words even if
you made a 104%
Standard
S7L3. Students will
recognize how
biological traits are
passed on to successive
generations.
Today in Science !
Balderdash Retest
Finish DNA and RNA page
Finish Sponge Bob HW
Get notebook organized.
New HW: Punnett Square WS
Response page
 Make a punnett and cross a
heterozygous for freckles Ff with a
homozygous no freckles ff
Standard
S7L3. Students will
recognize how
biological traits are
passed on to successive
generations.
Today in Science !
Balderdash Retest
Finish DNA and RNA page
Finish Sponge Bob HW
Get notebook organized.
New HW: Punnett Square WS
No Response Page Today.
Take a few minutes to update your
Table of Contents.
New Stuff beginning today!
Standard
S7L3. Students will
recognize how
biological traits are
passed on to successive
generations.
Today in Science !
Balderdash Retest in 6th and 7th
Turn in the following:
Sponge Bob Genetics -25%
Due tomorrow for 100%
Punnett Square WS NB# 15
DNA vs RNA NB# 14
Meiosis Notes
You will not copy all the slides, I will let you
know what to write. Part of these notes
will be your own summary
Write
this !
Karyotype- A picture of chromosomes
in mitosis arranged according to
homologous pairs. Humans have 23
pairs or a total of 46 chromosomes.
Autosomes are chromosomes 1-22
the non-sex chromosomes
This is a karyotype of a human female’s
chromosomes. How can you tell that these are
from a female?
Describe what a karyotype
looks like?
Add this
All boys have X Y
All Girls have X X
Chromosomes are easiest to see in this
structure during metaphase when they are
being copied. What you
actually see is a double set
of chromosomes that are
about to split, totaling
92 chromosomes. After
cell division each daughter
cell will have 46
chromosomes.
• Cell Division by mitosis- All
body cells are copied by this
process- The new cells have a
FULL set of genetic
information- same number of
chromosomes
• Cell Division by Meiosis- Only
sex cells are created this wayThe new cells will have a
HALF set of genetic
information. Half the number
of chromsomes.
Fertilization- the joining of sperm (a
haploid cell) and egg (a haploid
cell).
The newly fertilized cell (or zygote) will contain a
full set of genetic information (diploid cell) and will
then grow into more cells through the process of
mitosis.
Segments of DNA that control an
organisms characteristics are
called genes. Parents contribute
one allele each to their offspring for
every gene (20,000 diff genes).
About 1200 nucleotides
make up one gene.
Each of the chromosomes pictured here were
contributed from a different parent. One parent’s
allele for flower color is purple and the other
parent’s allele for flower color is white.
Alleles are different versions of the same gene.
How are genes and alleles
different?
A gene is a section of DNA that codes for
one trait. There are normally two alleles
for each trait. Ex there is a gene for
freckles and an alleles for freckles F or an
allele for no freckles f.
Complete the following chart using the textt
book.
2 and 3rd stopped here
# of Parent Cells
# of Daughter
Cells
Daughter cell
chromosomes #
(humans)
Are daughter cells
Haploid or diploid?
How many divisions?
How do the new cells
compare to parent
cell?
Mitosis (p 100 &127) Meiosis (p 128)
Who is a Harry Potter fan?
• http://www.slideserve.com/presentation/47
47/Harry-Potter-Genetics-Powerpoint--Fun
• This is the Harry Potter power point that
we watched Monday or Tuesday.