Download Grade 10 – Reproduction and Genetics

BEIJING BISS INTERNATIONAL SCHOOL
GRADE 10 SCIENCE
NAME: _____________________________________
HOMEROOM:
UNIT(S): 10-05 – Inheritance and Reproduction
DUE DATE:
DNA Review
Directions: Complete the following questions. You can only write on the lines provided, the
goal is for you to write as specific as possible. Use your own words!
1. What is the difference between genes and chromosomes? Write a definition of each below
and then explain how they are linked together.
Genes: _______________________________________________________________________
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Chromosomes: ________________________________________________________________
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How they are linked: ___________________________________________________________
_____________________________________________________________________________
_____________________________________________________________________________
2. Draw a labelled diagram of DNA. Make sure to include a organic bases, sugar-phosphate
backbone and the sugar group.
3. Why is the order of the bases important?__________________________________________
_____________________________________________________________________________
_____________________________________________________________________________
4. How is DNA related to genes and chromosomes? Be specific. ?_______________________
_____________________________________________________________________________
______________________________________________________________________________
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3. What is the difference between an organism’s genotype and it’s phenotype?
definition of each below and then explain how they are linked together.
Write a
Genotype: ____________________________________________________________________
_____________________________________________________________________________
_____________________________________________________________________________
Phenotype: ____________________________________________________________________
_____________________________________________________________________________
_____________________________________________________________________________
How they are linked: ___________________________________________________________
_____________________________________________________________________________
_____________________________________________________________________________
4. What is the difference between a dominant gene and a recessive gene?
Dominant Gene: _______________________________________________________________
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Recessive Gene: _______________________________________________________________
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