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Biology - Genetics 1 - Classwork

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Last updated 10 months ago
110 questions
Section 1 - DNA
Section 2 - Karyotypes, Chromosomes, and Alleles
Section 3 - Mendel
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Section 4 - Punnett Squares
Section 5 - Quiz Review
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Secttion 6 - Guided Practice to be done TOGETHER as a class!!!
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The material for this topic is on CK12 - THERE ARE TWO ARTICLES!! Click the links below and:

  1. Read the article
  2. Watch the videos
  3. Complete the Practice
  4. Hit the TURN IN button on CK12 ONLY
Mendel's Pea Plants

Mendel's Laws
Question 29
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What is Gregor Mendel known for?

Question 30
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Which part of plants is the male gamete? (Not the male organ, the actual gamete)

Question 31
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Critical Thinking: On a pea plant, the pea pod is a carpel, or a single simple ovary. The peas are the ovules, which are fertilized female gametes. How do you think this compares to an apple?

Question 32
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To the Google! What is Mendel's Law of Independent Assortment?

Question 33
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To the Google! What is Mendel's Law of Segregation?

Question 34
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To the Google! What is Mendel's Law of Dominance?

Question 35
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Complete the chart of definitions in the Show Your Work Box (use the text tool!!)

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Question 91
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Question 96
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Question 97
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In fruit flies, red eyes (R) are dominant to white eyes (r). Create a punnett square a cross between a white eyed female (hint: if she has white eyes, what are her alleles?) and a purebred red eyed male. (hint: purebred = homozygous)

Question 98
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Question 99
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Question 100
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Two hybrid (or heterozygous) red eyed flies (Rr) are crossed. What percentage of their offspring do you think will be red eyed? Show your work and circle your answer.

Question 101
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If the flies had 625 children, how many would you expect to have white eyes? Why?

Question 102
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Question 103
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Explain the difference between genotype and phenotype. Use examples

Link to extra practice with Punnett Squares
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Other Answer Choices:
Nitrogenous Base
Deoxyribose (sugar)
Phosphate
Question 11
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Question 13
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Spike is not a clone of his father. He inherited DNA from both of his parents. Chromosomes are condensed units of DNA. If Spike has 36 chromosomes, you would expect that Spike would have inherited _______ chromosomes from his mother and _______ chromosomes from his father.
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Fill in the Punnett Square

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Question 67
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Complete the Punnett Square

Question 68
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_______ out of _______ or_______ %
Question 70
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_______ out of _______ or_______ %
Question 71
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Complete the Punnett Square

Question 72
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Question 73
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_______ out of _______ or_______ %
Question 74
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_______ out of _______ or_______ %
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Question 90
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Which statement best describes the structure of a DNA molecule
DNA is a double stranded molecule that is straight like a ladder
DNA is single-stranded and straight molecule
DNA is a single-stranded and curly molecule
DNA is a double-stranded molecule that looks like a spiral staircase
A portion of DNA that codes for a protein, that causes a trait, is a
Gene
Phosphate
Deoxyribose
Chromosome
Chromosomes contain...
nucleus
DNA
traits
cells
Normal human females have two X chromosomes. Which of the karyotypes shown is from a normal female?
A
B
C
D
Genes contain the instructions for assembling
traits
proteins
chromosomes
nucleosomes
Two parents are carriers for sickle cell trait - this means they have the recessive gene, but they don't have the disease because they also have the dominant gene. What's the chance of their child having sickle cell anemia? Complete the Punnett Square in the Show Your Work Box
75%
50%
25%
0%
For the above cross, the genotypes of the offspring would be?
RR 100%
RR 75%
RR 50 %
RR 25%
RR 0%
Rr 100%
Rr75%
Rr 50%
Rr25%
Rr 0%
rr 100%
rr 75%
rr 50%
rr 25%
rr 0%
For the above cross, the Phenotype of the offspring would be?
Red Eyed 100%
Red Eyed 75%
Red Eyed 50%
Red Eyed 25%
Red Eyed 0%
White Eyed 100%
White Eyed 75%
White Eyed 50%
White Eyed 25%
White Eyed 0%
The observable traits expressed by an organism are
described as its ________.
a. phenotype
b. genotype
c. alleles
d. dominant allele
In lizards, two toes on the back feet is a recessive trait, three toes is dominant. Number of toes is the...
Genotype
Phenotype
In lizards, two toes on the back feet is a recessive trait, three toes is dominant. If a lizard has three toes on the back feet, what are its possible genotypes?
Tt and TT
TT and tt
three toes
two toes
In lizards, two toes on the back feet is a recessive trait, three toes is dominant. If a lizard has three toes on the back feet and is heterozygous, what are its possible genotypes?
Tt and TT
TT and tt
TT only
Tt only
In lizards, two toes on the back feet is a recessive trait, three toes is dominant. If a homozygous dominant lizard is crossed with a homozygous recessive lizard, what are the genotypes of those two parents?
Tt and Tt
TT and TT
TT and tt
Tt and TT
Tt and tt
In lizards, two toes on the back feet is a recessive trait, three toes is dominant. If a homozygous dominant lizard is crossed with a homozygous recessive lizard, what are the genotypes of the offspring? Show your Punnett Square!
100% Tt
50% Tt and 50% tt
75% TT and 25% tt
50% TT, 25% Tt, and 25%
All three toed
All two toed
50% three toes and 50% two toes
25% three toes and 75% two toes
In lizards, two toes on the back feet is a recessive trait, three toes is dominant. If a homozygous dominant lizard is crossed with a homozygous recessive lizard, what are the phenotypes of the offspring?
100% Tt
50% Tt and 50% tt
75% TT and 25% tt
50% TT, 25% Tt, and 25%
All three toed
All two toed
50% three toes and 50% two toes
25% three toes and 75% two toes
In order to produce a two-toed lizard...
one parent must be homozygous recessive, doesn't matter about the other parent
one parent must be homozygous recessive and the other must be homozygous dominant
each parent must have at least one recessive allele to give (they could be heterozygous or homozygous recessive)
there is no way to figure out anything from the offspring phenotype
Homozygous
Hairless
Homozygous
hairless
Tt
Heterozygous
Homozygous
Bb
Heterozygous
Homozygous
DD
Heterozygous
Homozygous
Ff
Heterozygous
Homozygous
tt
Heterozygous
Homozygous
dd
Heterozygous
Homozygous
YY
Yellow
Blue
Yy
Yellow
Blue
yy
Yellow
Blue
SS
Square
Round
Ss
Square
Round
ss
Square
Round
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B
C
D
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C
D
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B
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Which statement best describes the relationship between inherited traits and genes?
A
B
C
D