Transcript CRCT PRACTICE, 3/17/14 Organisms that carry two

CRCT PRACTICE, 3/17/14
Organisms that carry two identical
Genes for a trait are called
a.
b.
c.
d.
Co-dominant
Homozygous
Heterozygous
Hybrid
Mendel’s P1 Punnett Square:
Trait= height
Parent cross= TT x tt
Offspring:
Offspring:
Offspring:
Offspring:
CRCT PRACTICE, 3/18/14
Mendel observed several traits that
have two different forms, for
example, the height of pea plants is
controlled by two different
A.
B.
C.
D.
organs
hybrids
alleles
mutations
Write the question and answer
completely:
1.What are two ways sexual and
asexual reproduction are alike?
2. What is the MAJOR difference
between asexual and sexaul
reproduction?
3. Specifically where are genes found ?
4. What is the difference between an
allele and a gene?
TURN THIS IN. PICK UP PUNNETT SQ
CRCT PRACTICE 3/19/14
Which of the following is true about
multicellular organisms?
A.Their cells have specific functions.
B.Their cells have general functions.
C.Their cells perform more than one
function.
D. Their cells cannot perform any
functions.
Guinea Pigs
Brown fur – dominant-B
Grey fur- recessive- b
List all the allele combinations for
brown fur __________________
List all the allele combinations for
grey fur ___________________
Work a Punnett square showing the
parent cross between a homozygous
grey parent and a heterozygous
brown parent.
CRCT Practice March 20, 2014
If one copy of a dominant allele is
present in a genotype, then the
trait the allele codes for is
A. Expressed in the phenotype
B. Not expressed in the phenotype
C. Partially expressed in the
phenotype
D. Not expressed in all sibling’s
phenotype
After the quiz, read two sections
from the new book:
1. Pages 150-154
2. Pages 144-148
CRCT Practice 3/21/14
Which is an example of an acquired
trait?
A.
B.
C.
D.
Eye color
Hair color
Blood type
Ability to read
Vocabulary
15. Selective Breeding- the
process of choosing a few
organisms with desired traits
to reproduce; can produce
offspring with those traits
16. Natural Selection-the
process of nature choosing the
organisms with the strongest
traits to survive; drives
evolution
17. Adaptation- a trait an
organism has that enables
that organism to survive and
reproduce
18. Genetic engineering-man
driven; creating organisms with
a specific trait; done in a
laboratory setting
Notes, 3/21/14
1. What is natural selection?
2. What is speciation?
3. What is isolation?
4. What role does genetics play
in natural selection and evolution?