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4. Genetics Study Guide (Year)
Instruction: Answer each question you may use notes, text book, etc. This will help you prepare
you for the unit test, but may be used on the unit test.
1. Why do offspring look like their parents?
2. List some characteristics that are inherited.
3. List some characteristics that are not inherited.
4. What is the passing of traits from parents to offspring called?
5. What is the hereditary material in a cell?
6. What is the function of DNA?
7.
What is a gene?
8. What is the segment of DNA that determines the inheritance of a particular trait is
called?
9. How are traits inherited from parents?
10. How do offspring get their genetic information?
11.
How much DNA does an offspring inherit from each parent?
12.
How many sets of instructions does a fertilized egg receive from EACH parent?
13. If you cross two rabbits that have the genotype Bb, how many possible genotypes can
be found in the offspring?
For the question(s) that follow: A geneticist crosses a white flower (with the
genotype pp) with a purple flower (with the genotype PP)
14. For the above cross what would be the possible genotypes of the offspring?
15. For the above cross, what would the possible phenotypes be?
16. If a purple flower with the genotype Pp (P = purple; p = white) mates with another
purple flower with the genotype Pp, what would be the probability of their offspring having
a phenotype of purple?
17. If a purple flower with the genotype Pp (P = purple; p = white) mates with another
purple flower with the genotype Pp, what would be the probability of their offspring having
a genotype of Pp?
18. If a purple flower with the genotype Pp (P= purple; p=white) mates with a white
flowered plant pp, what would be the probability that their offspring would have a
phenotype of white?
19. If a purple flower with the genotype Pp (P= purple; p=white) mates with a white
flowered plant pp, what would be the probability that their offspring would have a genotype
of PP?
Examine the Punnett square below, and then answer the questions that follow.
20.
What is the genotype of the unknown parent?
21.
What is a phenotype?
22.
What is a genotype?
23.
List several examples of genotypes.
24.
List several examples of phenotypes.
25.
What is a trait that requires two of the same alleles to be observed is called?
26.
What is a trait that requires only one allele to be observed called?
27.
The form of a trait which shows up even when only inherited from one parent is the
_____________form.
28.
The form of the trait which shows up only when inherited from both parents is the
_______________ form.
29.
A bent little finger is an inherited trait which is present even when inherited only
from one parent. What type of trait is this?
30.
Freckles is a trait which only shows up when inherited from both parents. What type
of trait is this?
31.
Tongue rolling is a dominant trait, which means that someone who can roll their tongue
has inherited this trait from at least how many parents?
Use the information below to answer the questions that follow.
Dominant
Traits
Recessive
Traits
tongue rolling = R crooked fingers = C
brown eyes = B
6 fingers/toes = P
non-rolling = r
blue eyes = b
5 fingers/toes = p
straight fingers = c
32.
If a woman has the genotype Cc what would her phenotype be?
33.
If a man has the genotype PP what would his phenotype be?
34.
If a woman had the genotype rr what would her phenotype be?
35.
If a man had the genotype Bb what would his phenotype be?
36.
What are alleles?
37.
How are genes different from alleles?
38.
What are traits?
39.
How are traits related to genes?
40.
What is an inherited characteristic of an organism called?
41.
What are Traits are controlled by?
42.
Why is mitosis necessary?
Examine the diagram below and
use it to answer the questions
that follow.
http://www.mrothery.co.uk/cellcycleand
repro/mitosisq1.htm
43. Which picture represents the phase
where DNA is replicated and
other cell materials are copied?
44. Which picture represents the phase where chromosomes are pulled apart to opposite
sides of the cell?
45. Which picture represents the phase in which the nuclear membrane breaks down and
DNA condense into chromosomes?
46. Which picture represents the phase where the chromosomes line up along the equator
of the cell.
47. Which picture represents the phase where nuclear membranes form around the two
sets of chromosomes?
48. Why is it necessary for the cell to duplicate DNA during mitosis?