Genetics Question Preview (ID: 30925)


Genetics Is The Study Of Genes, Genetic Variation, And Heredity In Living Organisms. TEACHERS: click here for quick copy question ID numbers.

What is Genotype?
a) genetic makeup of an organism; shown as letters
b) effects of these genes are seen when 2 different alleles are present
c) physical characteristics of an organism; shown as descriptions
d) form of a gene not expressed when paired with a dominant allele

What is Phenotype?
a) form of a gene not expressed when paired with a dominant allele
b) physical characteristics of an organism; shown as descriptions
c) effects of these genes are seen when 2 different alleles are present
d) genetic makeup of an organism; shown as letters

Sexual reproduction in animals depends on the production of gametes. Which of these processes produces gametes in animals?
a) Mitosis
b) Fertilization
c) Meiosis
d) Binary Fission

Which phase of mitosis is occurring when chromosomes are being pulled apart?
a) Prophase
b) Metaphase
c) Anaphase
d) Telophase

What is the exchange of genetic material between homologous chromosomes that results in recombinant chromosomes during sexual reproduction.
a) Independent assortment
b) Crossing-over
c) Incomplete dominance
d) Anaphase I of meiosis

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) 25%
c) 50%
d) 100%

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) karyotyping
b) DNA fingerprinting
c) genetic modification
d) gel electrophoresis

Which phase of mitosis is occurring when chromsomes line up in the center of the cell?
a) Prophase
b) Metaphase
c) Anaphase
d) Telophase

Most sex-linked, recessive traits—including hemophilia and color-blindness—appear in males. This phenomenon is best explained by which statement?
a) males have an X chromosome with dominant genes
b) most of the genes on the X and Y chromosomes of males are recessive
c) in males, the recessive sex-linked genes appear only on the Y chromosome
d) in males, the Y chromosome lacks the genes needed to mask the recessive genes on the X chromosome.

Which phase of mitosis is shows a clevage furrow produced?
a) Telophase
b) Anaphase
c) Metaphase
d) Prophase

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