first quarter quiz_grade eight science.pptx

QUIZ IN
SCIENCE 8
MENDELIAN PATTERNS OF
INHERITANCE

TEST I
DIRECTIONS: CHOOSE THE
LETTER OF THE CORRECT
ANSWER AND WRITE IT ON
YOUR ANSWER SHEET.

1. Who is known as the Father of
Genetics?
A. Charles Darwin
B. Gregor Mendel
C. Watson and Crick
D. Louis Pasteur

2. What did Mendel use for his
experiments on inheritance?
A. Fruit Flies
B. Pea Plants
C. Corn
D. Bacteria

3. A dominant allele is represented by:
A. Lowercase Letter
B. A Symbol
C. An Uppercase Letter
D. A Number

4. Which genotype is homozygous
dominant?
A. Tt
B. TT
C. tt
D. TtT

5. What does the term “phenotype” refer
to?
A. Genetic makeup
B. Physical expression of traits
C. Type of protein
D. DNA sequence

6. In Mendel’s monohybrid cross, the F2
generation showed what phenotypic ratio?
A. 3:1
B. 1:2:1
C. 9:3:3:1
D. 2:2

7. If a trait is controlled by a recessive
allele, which genotype will show the trait?
A. AA
B. Aa
C. aa
D. aA

7. Which law explains that alleles
separate during the formation of gametes?
A. Law of Independent Assortment
B. Law of Segregation
C. Law of Dominance
D. Law of Probability

8. Which of the following is a dominant trait
in pea plants according to Mendel's
experiments?
A. White flowers
B. Green peas
C. Tall stem
D. Wrinkled seeds

9. A homozygous dominant individual is
crossed with a homozygous recessive. What
will be the genotype of the offspring?
A. All homozygous dominant
B. All heterozygous
C. 50% heterozygous, 50% homozygous
D. All homozygous recessive

10. The Law of Segregation states that:
A. Alleles pair independently of one another
B. Traits are blended in offspring
C. Each individual has two alleles, and they
separate during gamete formation
D. Only dominant traits are inherited

TEST II
DIRECTIONS: SOLVE THE
FOLLOWING GENETIC PROBLEMS.
SHOW YOUR SOLUTIONS USING
THE PUNNETT SQUARE.

1. If a heterozygous tall
plant is crossed with a short
plant, what is the
probability of getting a tall
plant?

2. What type of parents
(genotype) will have a
probability of producing
50% of both traits?

3. A purebred tall pea plant is
crossed with a short pea plant.
What is the phenotype,
genotype, phenotypic ratio and
genotypic ratio of the F1?

first quarter quiz_grade eight science.pptx

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first quarter quiz_grade eight science.pptx