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HSA Review Lessons 15-18
Test Description: A review of HSA Lessons 15-18
Instructions: Answer all questions to get your test result.
1) In pea plants, yellow seeds (Y) are dominant over green seeds (y). A scientist is studying two plants with yellow seeds. Which information must be true about the plants?
A
The plants have the same phenotype.
B
The plants have the same genotype.
C
The plants have different phenotypes.
D
The plants have different genotypes.
2) In rabbits, the allele for black coat color (B) is dominant over the allele for brown coat color (b). Two black rabbits (Bb) are mated. What can you predict about the offspring?
A
All of the offspring will be brown.
B
Most of the offspring will be black.
C
All of the offspring will be black.
D
Most of the offspring will be brown.
3) A Labrador retriever can be black, yellow, or brown. Which of these processes makes it possible for two Labs to produce offspring of different colors?
A
meiosis
B
mitosis
C
osmosis
D
binary fission
4) A sperm cell of a moth has 112 chromosomes. How many chromosomes are in the moth's wing cells?
A
448
B
224
C
112
D
66
5) After an egg cell containing 16 chromosomes is fertilized, how many chromosomes will be present in the zygote?
A
8
B
16
C
64
D
32
6) Which of these combinations results in the expression of a recessive trait?
A
two dominant alleles
B
a dominant sex-linked allele and a Y chromosome
C
a dominant allele and a recessive allele
D
two recessive alleles
7) The physical characteristics of an organism are its
A
genotype
B
heredity
C
phenotype
D
genetics
8) A Punnett square is used to determine the
A
probable outcome of a cross
B
result of meiosis
C
result of mitosis
D
actual outcome of a cross
9) To maintain the chromosome number of an organism, the gametes must
A
be produced by meiosis
B
become recessive
C
become diploid
D
be produced by mitosis
10) Different forms of a gene are called
A
recessive factors
B
dominant factors
C
alleles
D
hybrids
*select an answer for all questions
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