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Genetics
Test Description: Genetics is the study of genes, genetic variation, and heredity in living organisms.
Instructions: Answer all questions to get your test result.
1) What is Genotype?
A
form of a gene not expressed when paired with a dominant allele
B
genetic makeup of an organism; shown as letters
C
physical characteristics of an organism; shown as descriptions
D
effects of these genes are seen when 2 different alleles are present
2) What is Phenotype?
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
3) Sexual reproduction in animals depends on the production of gametes. Which of these processes produces gametes in animals?
A
Mitosis
B
Binary Fission
C
Meiosis
D
Fertilization
4) Which phase of mitosis is occurring when chromosomes are being pulled apart?
A
Telophase
B
Metaphase
C
Prophase
D
Anaphase
5) What is the exchange of genetic material between homologous chromosomes that results in recombinant chromosomes during sexual reproduction.
A
Crossing-over
B
Anaphase I of meiosis
C
Independent assortment
D
Incomplete dominance
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
0%
B
100%
C
50%
D
25%
7) Nondisjunction is an error that occurs during meiosis when a gamete doesn’t receive a copy of one chromosome. Which technique could be used to reveal this abnormality?
A
DNA fingerprinting
B
karyotyping
C
genetic modification
D
gel electrophoresis
8) Which phase of mitosis is occurring when chromsomes line up in the center of the cell?
A
Telophase
B
Anaphase
C
Prophase
D
Metaphase
9) 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
most of the genes on the X and Y chromosomes of males are recessive
C
males have an X chromosome with dominant genes
D
in males, the recessive sex-linked genes appear only on the Y chromosome
10) Which phase of mitosis is shows a clevage furrow produced?
A
Metaphase
B
Prophase
C
Anaphase
D
Telophase
*select an answer for all questions
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