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Student Exploration: DNA Fingerprint Analysis
Vocabulary: codon, DNA, DNA fingerprint, genotype, identical twins, nitrogenous base
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
The two navy officers shown at left are identical twins
Why do you think identical twins look so similar?
IMinx Lecaut: they might haut_
Some Senatele or DAbig
2. Most brothers and sisters don't look exactly the same.
What causes most siblings to have different appearances?
Ditfe ceand the notype and Ibelieve
May don't howt same lxenotyfe.
Most of an organism's traits, or
characteristics, are encoded in DNA. Traits
are determined by a unique sequence of
nitrogenous bases in the DNA molecule
Except for identical twins, the order of every
individual's nitrogenous bases is unique.
Scientists use this fact when studying DNA
fingerprints-patterns of bands made from
analyzing a strand of DNA. In the DNA
Fingerprint Analysis Gizmo TM, you will
analyze DNA fingerprints of frogs.
1. Select the POPULATION tab. What are the three main traits that vary between the frogs?
fr Colors , Skin, outd DNA
Which frog would you expect to have the most similar DNA to frog A? Why?
Arcad when you leor at It it's alnat lent
tite Pros A
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- Fall '19
- Mr travis
- DNA, Fingerprint Analysis