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Bio 1005 Test 3 Flashcards | StudBud
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Bio 1005 Test 3
Bio 1005 Test 3
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Answers
1
If the two alleles for a particular gene are identical the gene pair is
heterozygous
homologous
dominant
homozygous.
2
What kind of asexual reproduction do prokaryotes do
binary fission
Mitosis
Handshakes
Meiosis
3
The enzyme that unwinds DNA is
transcriptase.
DNA polymerase.
amylase.
helicase.
4
Name the three parts of Translation
Start, Middle, Stop
Initiation, translation, termination
Initiation, Elongation, Termination
There are not three steps
5
When chromosomes fail to separate during meiosis, this is known as
random separation
crossing over.
translocation.
nondisjunction
6
The "central dogma" of molecular biology described by Watson and Crick describes
the directional flow of genetic information in cells.
the passing of genetic information from DNA to RNA by translation
the inheritance of traits between generations
the passing of genetic information from RNA to protein by transcription
7
At what point during Meiosis will the sister chromatids separate?
Metaphase II
Anaphase II
They will not separated
Anaphase I
8
The human chromosomes that do not determine an individual's sex are
autosomes
not found in pairs
the "X" and "Y" chromosomes
sex chromosome
9
A pea plant with (Tt) as its genotype should be referred to as
heterozygous
homozygous recessive
mutant
the wild type
10
Phenotypes that affect one sex more than the other
don't exsist
recessive
sex-linked
dominant
11
what is the first phase of mitosis
Interphase
Metaphase
Anaphase
Prophase
12
The person who made the most lasting impression on the science of genetics is
Charles Darwin.
King George III
Robert Hooke
Gregor Mendel
13
Name the three types of RNA
gRNA, mRNA, cRNA
RNA, DNA, CNA
mRNA, gRNA, cRNA
mRNA, tRNA, rRNA
14
the phenotype of a heterozygote is intermediate between the two homozygotes. There is no recessive form
recessive
codominant
incomplete dominance
dominance
15
The first sign of cytokinesis in an animal cell is the formation of a
nucleolus.
cell wall
cleavage furrow
cell plate
16
The component of the cytoskeleton that attaches to the chromosomes to separate them during anaphase is the
miotic spindles
Golgi apparatus
centromere
kinetochore
17
The process by which homologous chromosomes exchange genetic material
occurs only in animals
occurs only in bacteria.
is random fertilization.
is crossing over.
18
The double helix of DNA is composed of building blocks called
nucleotides.
phospholipids.
monosaccharides.
disaccharides
19
The process that merges the gametes from two parents is
fertilization.
mitosis
mutation
meiosis.
20
A portion of DNA that encodes a specific protein is a
chromosome
gene
chromatid
centromere
21
What type of RNA carries amino acids to the ribosome?
double-stranded RNA
messenger RNA
transfer RNA
complementary RNA
22
In humans skin color widely varies. This is because skin color is
influenced by crossing over
a polygenic trait.
influenced by environmental changes like improvements in diet
influenced by an X-linked gene
23
All of the following refer to mitosis, except
growth of an organism
repair of damaged cells
formation of gametes
asexual reproduction.
24
An organism’s genetic makeup or allele combinations is called
phenotype
gene
genotype
allele
25
The nucleotide sequence in mRNA is determined by
All answer choices are correct
the nucleotide sequence in DNA
the nucleotide sequence in tRNA
the order of amino acids in the protein