Share Biology Cumulative Final Exam 2025
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Which of the following best describes the definition of a gene?
an alternate form of a gene
none of these
a gamete
a specific location on a chromosome that codes for a trait
Which of the following genotypes would represent a homozygous recessive individual?
gg
Gg
GG
During which phase of meiosis does the crossing over of homologous chromosomes take place?
prophase I
interphase I
metaphase I
anaphase I
Mitosis is the division of ______________ and Meiosis is the division of _______________.
diploid cells, haploid cells
body cells, sex cells
all of these
somatic cells, gametes
Which of the following phenotypes would be expressed given the genotype tt?
the heterozygous phenotype
the recessive phenotype
none of these
the dominant phenotype
If you would cross a homozygous dominant individual with a heterozygous individual, what would be the phenotypic ratio of the possible offspring?
50% would show dominant, 50% would show recessive
25% would show dominant, 75% would show recessive
100% would show dominant trait
100% would show recessive trait
The central dogma of biology can be described as _______________________________.
DNA is transcribed into RNA, and RNA is translated to protein.
Which of the following is the name of the enzyme that unzips the double helix during DNA replication?
nuclease
ligase
DNA polymerase
helicase
DNA replication occurs ___________________________.
during transcription
in the s phase of interphase
during protein synthesis
during translation
When going from DNA to RNA, _______________________ is taking place.
transcription
none of these
DNA replication
translation
Which of the following is NOT one of the parts of a nucleotide?
none of these
sugar
nitrogenous base
phosphate group
In DNA, Adenine always pairs with ___________________.
Guanine
Thymine
Uracil
Cytosine
Protein synthesis takes place at __________________________.
chloroplasts
the golgi apparatus
the mitochondria
a ribosome
When a part of a chromosome is left off, which type of chromosomal alteration is taking place?
inversion
deletion
insertion
The enzyme in charge of proof-reading the DNA strand after it is replicated is ________________.
Helicase
Nuclease
Ligase
DNA Polymerase
Which of the following is NOT one of the three main parts of DNA replication?
Initiation
Elongation
None of these
Termination
