Download Learning from the Fossil Record Grade 8 Science Name: Katherine

Learning from the Fossil Record
Grade 8 Science
Name: Katherine Burns
Date: 1/5/11
Karyotype
Female
1. How many chromosomes does the human have?
46
The sperm and egg only have 23 and add up at reproduction.
2.
How many chromosomes come from the mother? Father?
Mother-23
Father-23
Learning from the Fossil Record
Grade 8 Science
Name: Katherine Burns
Date: 1/5/11
3. Circle the ones that come from the mother red and the father blue.
4. What is each chromosome made of?
DNA
5.
Create a diagram below showing where the genes are located in the
chromosomes.
= genes
6.
Go to this website and fill in the chart below for five different organisms.
*Diploid number = total number of chromosomes/ haploid number= number from each
parent
http://morgan.rutgers.edu/morganwebframes/level1/page2/ChromNum.html
Organism
Squirrel
House Fly
Armidillo
King Crab
Camel
# total
chromosomes
40
12
64
208
70
# chromosomes
from mother
20
6
32
104
35
# of chromosomes
from father
20
6
32
104
35
Learning from the Fossil Record
Grade 8 Science
Name: Katherine Burns
Date: 1/5/11
7.
Are the number of chromosomes in an organism related to the complexity of
the organism? Explain.
YES
They are because a house fly is very small and doesn’t really have a job it just flies.
So the complexity is very low which is why the amount of chromosomes is only 12.
The King Crab is big and needs more chromosomes so it can have claws and a shell
unlike the fly that only needs wings.
NO
Random relationship