WorksheetsTest 4 Biology Quiz pt 1
Total questions: 20
Worksheet time: 10mins
The spindle apparatus begins to become visible during what phase?
prophase
interphase
metaphase
anaphase
Independent assortment of chromosomes is a result of...
the random distribution of the sister chromatids to the two daughter cells during anaphase II.
the random and independent way in which each pair of homologous chromosomes lines up at the metaphase plate during meiosis I.
the random nature of the fertilization of ova by sperm.
the relatively small degree of homology shared by the X and Y chromosomes.
All human body cells contain 23 pairs of...
deoxyribonucleic acids
chromosomes
amino acids
ribonucleic acids
Body cells of human males contain what two sex chromosomes?
one X and one O
two Y
two X
one X and one Y
Which of the following statements is correct about autosomes?
All of these statements are correct.
In a human cell, all chromosomes are autosomes except 'X' and 'Y.'
A characteristic carried by autosomes would be passed to both males and females.
Autosomes are chromosomes found in both males and females.
What are Punnett squares used for?
predicting genetic cross results
determining a DNA sequence
testing for recessive alleles
identifying the gene locus
When replicated chromosomes align along the cell’s equator, the cell is in...
telophase
prophase
metaphase
anaphase
If there are 20 chromatids in a cell, how many centromeres are there?
80
10
40
20
Chromatids detach and become separate chromosomes during...
interphase
metaphase
anaphase
prophase
The human X and Y chromosomes are...
in all somatic cells of both sexes
approximately equal in size
called 'sex chromosomes' because they determine sex
all of the above
The observable features of an individual are its...
heterozygous
homozygous
phenotype
genotype
Taxol stops mitosis by affecting...
the fibers of the mitotic spindle
the S phase
the centrioles
The spindle is made of ______ and pulls chromatids apart; the contractile ring is made of ______ for cell separation.
microtubules; contractile filaments
intermediate filaments; contractile filaments
intermediate filaments; actin microfilaments
microtubules; actin microfilaments
What is a trait?
character on autosomes
variant of a character (ex: blond hair)
characteristic of phenotype
a heritable feature
Turner's syndrome females have what chromosome combination?
XO
XYY
XXY
XXX
Which is not a benefit of sexual reproduction?
Genetic diversity
Dilutes harmful mutations
Slows adaptation to changing environments
Allows storage of 'bad' traits
Which term goes with synapsis, tetrads, chiasmata?
autosomes
fertilization
haploid
crossing over
If there are 20 chromosomes in a cell, how many tetrads form?
20
80
40
10
Crossing over occurs during...
prophase II
anaphase I
anaphase II
prophase I
The end result of mitosis is...
2 diploid daughter cells
4 haploid daughter cells
2 haploid daughter cells
4 diploid daughter cells
