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Heredity
Test Description: Review
Instructions: Answer all questions to get your test result.
1) What is Genotype?
A
effects of these genes are seen when 2 different alleles are present
B
form of a gene not expressed when paired with a dominant allele
C
genetic makeup of an organism; shown as letters
D
physical characteristics of an organism; shown as descriptions
2) What is Phenotype?
A
physical characteristics of an organism; shown as descriptions
B
genetic makeup of an organism; shown as letters
C
form of a gene not expressed when paired with a dominant allele
D
effects of these genes are seen when 2 different alleles are present
3) Sexual reproduction in animals depends on the production of gametes. Which of these processes produces gametes in animals?
A
Binary Fission
B
Meiosis
C
Mitosis
D
Fertilization
4) Which phase of mitosis is occurring when chromosomes are being pulled apart?
A
Anaphase
B
Prophase
C
Metaphase
D
Telophase
5) What is the exchange of genetic material between homologous chromosomes that results in recombinant chromosomes during sexual reproduction.
A
Crossing-over
B
Incomplete dominance
C
Independent assortment
D
Anaphase I of meiosis
6) A mom who is heterozygous for type B blood and dad who has type AB blood are having a baby. What is the probability that they will have a baby with type A blood?
A
100%
B
0%
C
25%
D
50%
7) Which phase of mitosis is occurring when chromosomes line up in the center of the cell?
A
anaphase
B
prophase
C
telophase
D
metaphase
8) Most sex-linked, recessive traits—including hemophilia and color-blindness—appear in males. This phenomenon is best explained by which statement?
A
in males, the Y chromosome lacks the genes needed to mask the recessive genes on the X chromosome.
B
males have an X chromosome with dominant genes
C
most of the genes on the X and Y chromosomes of males are recessive
D
in males, the recessive sex-linked genes appear only on the Y chromosome
9) Which phase of mitosis is shows a cleavage furrow produced?
A
telophase
B
prophase
C
anaphase
D
metaphase
10) The different forms of a gene are called
A
alleles
B
genotypes
C
phenotypes
D
chromosomes
11) Mutations in body cells (not gametes) are passed on to offspring.
A
false
B
true
12) The order of the nitrogen bases along a gene forms a genetic code that specifies what type of protein will be produced.
A
false
B
true
13) The scientific study of heredity is called
A
genetics
B
biology
C
biochemistry
D
cytology
14) During protein synthesis, messenger RNA
A
carries amino acids to the ribosome.
B
provides a code from DNA in the nucleus.
C
releases the completed protein chain.
D
links one amino acid to another.
15) An organism with two identical alleles for a trait is
A
dominant
B
heterozygous
C
recessive
D
homozygous
16) An example of a hybrid genotype would be
A
Gg
B
gg
C
GG and gg
D
GG
17) DNA has chemicals called bases. So does RNA. Which of the following is true?
A
DNA has the base uracil.
B
Adenine pairs with uracil in RNA.
C
Guanine pairs with thymine.
D
Thymine pairs with cytosine.
*select an answer for all questions
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