Download GENETICS TEST #3 OBJECTIVES: SB2. Students will analyze how

GENETICS TEST #3
OBJECTIVES:
SB2. Students will analyze how biological traits are passed on to successive
generations.
c. Using Mendel’s laws, explain the role of meiosis in reproductive
variability.
d. Describe the relationships between changes in DNA and potential
appearance of new traits.
Match the following:
A. Monohybrid B. Dihybrid C. Sex-Linked
E. Codominance
F. Blood Typing
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D. Incomplete Dominance
Results in a blend of 2 traits
A cross involving one trait
Both traits are dominant
A cross involving 2 traits
Controlled by genes on sex chromosomes
0 is the universal donor and AB is the universal recipient
Could result in pink or lavender flowers
Could result in calico cats or dairy cows
Not carried on the Y chromosome because it is too small
10. Use the karyotypes above to answer the following questions:
a. Which karyotype is a normal female?
b. Which karyotype is a female with down syndrome?
c. Which karyotype is a normal male?
d. How many chromosomes does a normal human have?
e. How many chromosomes does a person with down syndrome have?
f. What kind of mutation causes down syndrome?
11. Mistakes made in DNA are called _________.
12. Anything in the environment that causes a mutation is a _______________.
13. List 3 common mutagens.
14. List 2 examples of gene mutations.
15. A change in a single base is called a ______________ mutation.
16. When a base is inserted or deleted it causes a ____________ mutation. It shifts the
reading frame.
17. What are the 5 types of chromosomal mutations?
18. A _________________ is when part of a chromosome breaks off during mitosis or
meiosis.
19. _________________ occur when a section of chromosome is repeated.
20. The failure of chromosomes to separate correctly during meiosis is
___________________.
21. When a piece of one chromosome combines with a different chromosome, a
___________________ mutation occurs.
22. ___________________ is when a section of chromosome breaks off, changes
direction, and recombines on the same chromosome.
23. What kind of mutations often lead to cancer?
24. What type of mutation is passed down to the next generation?
Identify the mutation type:
Choices: point, frameshift, deletion, nondisjunction, duplication, inversion, translocation
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32. Curly hair in humans is dominant over straight hair. Cross two parents that are
hybrid for curly hair. What is the probability of this couple having a child with
straight hair?
33. In flowers, red is incompletely dominant to white. Cross a pink flower with a red
flower. What is the probability of having pink flowers?
34. Hemophilia is a sex-linked trait. Cross a woman that is a carrier for hemophilia
with a male that has hemophilia. What is the probability of this couple having a
male with hemophilia?
35. Black and yellow are codominant traits in cats resulting in a calico cat. Cross a
black cat with a calico cat. What is the probability of having yellow cats?