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BIO 101 Exam 4 Flashcards | StudBud
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BIO 101 Exam 4
BIO 101 Exam 4
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1
The physical expression of one or more pairs of alleles (eg. blonde hair & blue eyes) is called the __________
genotype
gametes
phenotype
recessive
2
_______________________ alleles, such as C or T, are written with a capital letter.
dominant
haploid
diploid
recessive
3
During interphase, ____ is when the cytoplasm & organelles increase, whereas in ____ materials for spindles are created
G1 , G2
S, G1
S, G2
G1, S
4
____________________ chromosomes have the same size, shape, and gene composition.
homozygous
chromatin
conjugation
homologous
5
Determine the NUMBER of gamete combinations LIST each combination for: CCEe
4: CC, cc, CE, ce
2: CE, Ce
4: CC, Ce, ce, Ec
2: CE, ce
6
During which phase of meiosis do sister chromatids separate?
Anaphase II
Anaphase I
Prophase I
Telophase I
7
In which phase of meiosis is the chromosome number of eventual daughter cells reduced by one-half?
Anaphase I
Anaphase II
Prophase II
Metaphase I
8
Mendel's principle of _____ states that only one allele of each pair will be present in a gamete
gene segregation
independent assortment
epistasis
pleiotropy
9
Cells that
are not
actively preparing to divide (thus not in the cell cycle) are categorized in the ____________ stage
Telophase
S phase
G0
Prophase
10
What structure of actin filaments is used to divide the cytoplasm in animal cells?
Contractile Ring
Contractile Spindle
Contractile Furrow
Contractile Plate
11
. A parent germ cell with 2n = 26 divides via
meiosis
to produce ______ daughter cells that are n = ______
13, 26
4, 26
4, 13
26, 13
12
______ is the building block/subunit of a chromosome
nucleosome
chromosome
centormere
chromatin
13
_____ is the expression of BOTH alleles in heterozygous condition
gene linkage
independent assortment
incomplete dominance
codominance
14
What is the expected ratio of F
2
offspring from Mendel’s dihybrid crosses?
1:3:3:9
9:1:3:3
9:3:1:3
9:3:3:1
15
The genetic composition for one or several traits is called the ________________
genotype
phenotype
mitosis
meiosis
16
Which of Mendel’s principles deals with the sorting of one pair of alleles into different gametes during meiosis?
Inbreeding
Independent Assortment
Segregation
Genetics
17
What is the name of cell division in prokaryotes that is similar to mitosis in eukaryotes?
Fusion
Fission
Conjugation
Transduction
18
What is the name given to the extra circular loop of DNA that is found in bacteria that can undergo “bacterial sex”?
plastid
pilus
plasmid
plasma
19
A parent liver cell with 2n = 26 divides via
mitosis
to produce _____ daughter cells that are _____n = _____.
2, 2, 26
13, 1, 2
26, 1, 26
13, 2, 2
20
What are the
two
components (or building blocks) of a chromosome?
TWO ANSWERS
Histomere Proteins, RNA
RNA, DNA
RNA, Histone Proteins
DNA, Histone Proteins
21
____________ alleles, such as c or t, are written with a lowercase letter.
carriers
phenotype
recessive
dominant
22
What plant was used by Mendel to conduct his breeding experiments?
Garden Bean
Garden Petunia
Garden Pea
Garden Pansy
23
The _______________ of Biology is a linear model that shows the production of proteins from DNA (genes)
Conjugation
Dominant
Chiasmata
Central Dogma
24
Where chromatids of homologous pairs of chromosomes overlap & exchange portions of the chromatids during meiosis is ____
fission
cytokenesis
crossing over
mitosis
25
The S-phase of Interphase occurs before both Meiosis I and Meiosis II.
True
False
26
The actual fusion of homologous chromosomes in meiosis I?
chiasmata
conjugation
tetrad
synapsis
27
What are the duplicate copies of a chromosome called?
Chromatists
Chromatids
Centromeres
Chromoplasts
28
The diploid cell formed by fusion of sperm and egg cells during sexual reproduction is called a(n) _______________.
spore
zygote
diploid
haploid
29
How many of the male and female products will be functional, reproductive cells in both plants and animals?
All of the male & female products are functional.
Two males & two females products are functional
One male & all four female products are functional.
All the male & one of the female products are functional
30
______ forms between daughter cells in plants to divide the cytoplasm
cell plate
contractile ring
chiasmata
tetrad
31
In which phase of meiosis do four haploid daughter cells form?
Anaphase II
Telophase II
Anaphase I
Telophase I
32
. What is the expected ratio of F
2
offspring from Mendel’s monohybrid crosses?
4:1
1:3
3:1
9:1
33
In which phase of meiosis do homologous chromosomes separate?
Metaphase I
Telophase II
Anaphase II
Anaphase I
34
Division of the cytoplasm during cell cycle of
germ cells
is called ____, whereas ____ is the division of the nucleus
meiosis, cytokenesis
mitosis, cytokenesis
cytokinesis, mitosis
mitosis, meiosis
35
. The position of a gene or allele on a chromosome is called a(n) _____________
Allele
Chromatin
Interphase
Locus
36
____ is when one pair of alleles influences many traits
phenotypic plasticity
aneuploidy
polygenic inheritance
pleiotropy
37
What is a segment of a chromosome that is codes for a specific protein called?
Genome
Genotype
Genomere
Gene
38
What is a pair of fused homologous chromosomes called (as viewed during meiosis I)?
Conjugation
Chiasmata
Tetrad
Synapsis
39
What is the final product of gene expression called (think central dogma of biology)?
DNA
protein
RNA
glucose
40
What is the name of the structure that forms in prophase and directs the separation of chromosomes in mitosis & meiosis?
Bipolar Spindle
Bipolar Synapse
Bipolar Sphinctor
Bipolar Synthesis
41
What are multiple forms of a gene called?
Alleles
Allogenes
Isogenes
Homogenes
42
CC or tt are examples of two in alleles in the ____________________ condition.
crossing over
heterozygous
homozygous
homologous
43
Determine the NUMBER of gamete combinations LIST each combination for: PpTt
4: PT, Pt, Tp, pt
2: PP, tt
2: Pt, Tp
4: PP, pp, TT, tt