QUESTIONS THAT MAY BE USED FOR THE GENETICS TERM TEST
Twenty questions will be pulled from this list of questions for the test. Each student must
pass the test with a “B” grade or higher in order to continue on and take other genetic’s
tests. This is a quality assignment. Those who do not pass, will have to retake a different
test until they do pass. In studying for this test, you may use any possible means to learn
the material.
Matching
1. Dominant or recessive form that gene may take
recessive
2. Condition in which one allele is not dominant
allele
to the other and three phenotypes result
punnett square
3. genetic trait dominates or prevents the expression
co-dominant
of the recessive
phenotype
4. unit responsible for the transmitting of hereditary
dominant
traits; segments of a DNA molecule
homozygous
5. science of heredity
gene
6. particular combination of alleles of an organism
heterozygous
7. having two different alleles for a given charecter trait
genetics
at the corresponding sites on homologous chromosomes
genotype
8. having two identical allesles for a given trait at the corresponding
sites on homologous chromosomes
9. physical or visible charecteristic that the genotype determines
10. chart uses to determine the possible genotypes of the offspring of a cross
11. form of a trait that is dominated by another form
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
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24.
25.
The cells of a body are all: 1n, 2n, 3n, monoploid
All normal gametes are : 1n, 2n, 3n, diploid
Circle the homozygous genes: Aa, BB, AaBb, Bb
Circle the herozygous genes: Aa, BB, AABB, Bb
Circle the gametes for this individual AABB
A, Aa, AB, Ab, AaBb, ba
How many different gametes are possible from a parent AaBb?
Which is properly written for a heterozygote cross with a homozygote?
Bb x Bb, Bb x BB, AaBb x AABb, AABB x AABB
For this genetic cross, AabbCc x AaBbCc, the gametes will all be?
1n, 2n, 3n, diploid, triploid
How does one figure out the F2 generation?
F1 x F1, Parent x F1, P1 x P1, P1, x P2, F1 x F2
Circle the alleles in this cross. AABBCc x aabbCC
What do these symbols mean? ¼= __________, F= _________
parent, filial, phenotype, family, probability, phooey
Circle all the gametes this individual can provide: AABb
A, B, AB, Ab, AA, Bb, Abb
Which of these are homozygous for two traits?
AABB, AaBb, AABb, aabb, MmFf, aaBb
How many different gametes are possible form a parent who is DdEe?
1, 2, 3, 4, 5, 6,
26. Which is properly written for a homozygous cross with a heterozygous?
AA x aa, Aa,x Aa, BB x Bb, bb x bb, AABB x aabb, AaBb x AaBb
27. For this genetic cross, DDEeRr x ddeeRR, the gametes will all be:
diploid, triploid, 1n, 2n, 3n, unknown
28. AABB
(gametes) AA, AB, BB (circle correct ones)
29. AaBbCC
(gametes) AaBC. ABC. AbC. Abc (circle correct ones )
30. Circle the homozygous (for each trait) Underline the heterozygous (for each trait)
HHNN, UuYy, J, Aabb, Aa, BB
31. Parents are all: 1n, 2n, 3n, monoploid
32. Gametes are all: 1n, 2n, 3n, diploid
33. F1 (progeny) are all: 1n, 2n, 3n, haploid
34. Your body cells are all: 1n, 2n, 3n, haploid
35. Your sex cells are all: 1n, 2n, 3n, diploid
36. Write out a gamete for this person: AaBbCcDd
37. How many different gametes can these people produce:
AaBB = ____, Aa= _____, AABB = _____, AaBBcc= _____
38. Circle the phenotypes: AABB, AB, ½ AB, green eyes, Tall, recessive, dominant
XX, female
38. Circle all the gametes this individual can provide: BBYy
BB, BY, Yy, By
39. How many different gametes could this person make? BbYyGG
1, 2, 3, 4, 5, 6
40. Gametes for this person BbYy will all be?
Diploid, haploid, triploid, 2n, 4n
41. Circle the homozygous trait.
A, AA, Aa, AABb
42. Circle the homozygous for two traits. AABB, AaBb, AABa AaBb, AA
43. Circle the heterozygous trait.
A, AA, Aa, AABb
44. Circle the hereozygous for two traits. AABB, AaBb, AABb, AaBb, Aa
45. Circle all the alleles in this cross:
AaBb x AABB
46. Circle the genotype(s) .
Brown hair, female, AaBb, ½ tall
47. Circle the phenotype(s) .
Brown hair, female, 2n, AA, Aa, ½ BB
48. When doing a genetic cross, what do these symbols mean? ¼= _____, F= _____
Parent, filial, phenotype, family, probability, phooey, final
49. Circle ALL of the recessive genes in this genetic cross.
AABbCc x AaBBCC
50. How does one find the F2 generation? F1 x F1, F1 x parent, P1 x P1, P1 x F1
Answer the questions below using this genetic problem
B = brown, b = blue
BB x bb
4/4 Bb
4/4 offspring will be brown eyed.
BB
bb
b
b
B
B
BB
Bb
Bb
Bb
Bb
51. Circle the recessive gametes.
52. Underline all homozygous offspring.
53. Put a square around a phenotype.
54. Write out the cross for how you would figure out the F2 generation for the above
example.
B=Black, b= brown
Bb x Bb
¾ black, ¼ brown
b
55. Circle a genotype.
56. Cross out a homozygous
recessive progeny.
57. underline a recessive phenotype.
T = tall, t = short
TT x tt
b
B
Bb Bb
BbB
B
Bb
4/4 Tt, 4/4 tall
Bb
TT tt
58. Circle all the gametes that have recessive alleles
T
59. Put a box around all heterozygous genotypes.
60. Underline all phenotypes.
T
61. Put an X through all parents.
62 For this example, how would you find the F2 generation?
t
t
Tt
Tt
Tt
Tt
Use the two genetic crosses below for your answers
Bb x Bb
½ Bb, ½ bb
AABB x aabb
16/16 AaBb
63. Circle all the genes of the parents
64. Underline all the recessive genes in both crosses.
65. Put a box around the F1 generation of both crosses.
B = brown,
Bb x Bb
66.
67.
68.
69.
70.
71.
b = white
¼ BB, ½ Bb, ¼ bb
¾ brown, ¼ white
Circle the parents.
Underline the phenotypes.
Square in the herozygous progeny
Cross out all the diploid cells.
Double underline the symbols.
Color in all the alleles. 72. How many gametes are seen in the problem above.
Understanding the punnett square.
For all of the following questions, you will be asked to circle the correct answer in the
genetic problem and on the punnett square. Be sure and circle ALL possible answers.
T = tall
t = short
TT Tt
T
Tt x TT
Bb
t
TT
TT
Tt
TT
Tt
TT, TT, Tt, Tt
T
73. Circle all dominant gametes on the punnett square.
74. Cross out all homozygous dominant parents.
75. Put a box around the progeny.
76. Scratch out all heterozygous offspring.
B = brown eyes
b = blue eyes
T
Bb
B
b
B BB
Bb
b Bb
bb
¼ = BB
½ = Bb
¼ = bb
Bb x Bb = BB, Bb, Bb, bb
¾ = Brown eyes
¼ = blue eyes
77. Circle a homozygous dominant
progeny inside of the punnett square and one outside of the punnett square.
78. Underline a phenotype.
79. Cross out a genotypic ratio.
80. Square a genotype for a person with blue eyes. (not the symbol for blue eyes.)
81. Color in all the progeny that are carriers for the blue eyed trait.
Genetic crosses
Use the genetic cross below to answer the questions.
AABB x aabb = 16/16 AaBb
82. Circle the genes of the parents.
83. Put a box around the F1 generation.
83. Underline all heterozygous genotypes.