Heredity Question Preview (ID: 43215)
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An example of a hybrid genotype would be
a) Gg
b) GG
c) gg
d) GG and gg
DNA has chemicals called bases. So does RNA. Which of the following is true?
a) Guanine pairs with thymine.
b) DNA has the base uracil.
c) Thymine pairs with cytosine.
d) Adenine pairs with uracil in RNA.
The order of the nitrogen bases along a gene forms a genetic code that specifies what type of protein will be produced.
a) true
b) false
c)
d)
An organism with two identical alleles for a trait is
a) heterozygous
b) homozygous
c) recessive
d) dominant
The scientific study of heredity is called
a) biology
b) biochemistry
c) cytology
d) genetics
During protein synthesis, messenger RNA
a) links one amino acid to another.
b) releases the completed protein chain.
c) provides a code from DNA in the nucleus.
d) carries amino acids to the ribosome.
The different forms of a gene are called
a) alleles
b) phenotypes
c) genotypes
d) chromosomes
Mutations in body cells (not gametes) are passed on to offspring.
a) true
b) false
c)
d)
Which phase of mitosis is shows a cleavage furrow produced?
a) telophase
b) anaphase
c) metaphase
d) prophase
Which phase of mitosis is occurring when chromosomes 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.
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%
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
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
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
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
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