JEROME H. BERNSTEIN
ALLOW STUDENTS TO FILL IN A WORKSHEET SIMILAR TO THIS
TRAITS
|
DOMINANT
|
RECESSIVE
|
YOUR TRAIT
|
WHERE DID
|
|
|
|
|
YOU INHERIT
|
|
|
|
|
YOUR TRAIT
|
|
free ear lobes
|
attached ear lobes
|
|
broad lips
|
thin lips
|
|
large eyes
|
small eyes
|
|
long eyelashes
|
short eyelashes
|
|
normal blood cells
|
sicklecell anemia
|
|
tongue roller
|
not a tongue roller
|
|
widow’s peak
|
straight hairline
|
|
second toe longer
|
second toe not longer
|
then big toe.
|
dimples
|
no dimples
|
|
hitchhiker’s thumb
|
no hitchhiker’s thumb
|
|
blood groups
|
blood group O
|
A, B and AB
Allow students to use this worksheet to answer questions 4,. 5, and 6 on the following page...
Allow students to work out a great many easy genetic problems. In general students will have difficulty with them.
1. pure tall pea plant(TT)
-
pure short pea plant(tt)
-
All the offspring will be __________________. Are they hybrid or pure? Explain why.
-
2. hybrid tall pea plants(Tt)
-
hybrid tall pea plants(Tt)
-
How many pea plantswill be tall? How many plants will be short?
-
How many will be pure? This is Mendel’s Law of _________?
-
3. Father has free ear lobes(FF)
-
Mother has Attached ear lobes(ff)
-
All the children will have ___________________ lobes. This is Mendel’sLaw of ______________________________. As to earlobes, are the children pure or hybrid?
-
4.
-
Dimples is a ___ trait. Can two parents with dimples have an offspring that does not have dimples. This would’ show Mendel’s Law of ____________.
-
5.
-
Can an offspring have type O blood if both parents have AB blood. Explain.
-
6.
-
Can the offspring have sicklecell anemia if neither parent has it. Explain. This is Mendel’s Law of ________.
