WorksheetsChromosomes - IB Bio - 3.2
Total questions: 32
Worksheet time: 19mins
How many pairs of chromosomes are in your cells?
23
46
13
42
A Goat has 60 chromosomes in its somatic cells. What is the haploid number?
60
30
34
120
A dog has 78 chromosomes in its body cells. What is the diploid number?
78
39
156
34
Diploid
A cell that has 2 kinds of each chromosome type, symbolized by 46n
A cell that has 1 kind of each chromosome type, symbolized by n
A cell that has 2 kinds of each chromosome type, symbolized by 2n
A cell that has 1 kind of each chromosome type, symbolized by 23n
Haploid
A cell that has 2 kinds of each chromosome type, symbolized by 46n
A cell that has 1 kind of each chromosome type, symbolized by n
A cell that has 2 kinds of each chromosome type, symbolized by 2n
A cell that has 1 kind of each chromosome type, symbolized by 23n
Homologous chromosome
2 chromosomes with different genes but matching alleles
2 chromosomes with different genes and possible different alleles
2 chromosomes with matching genes and always matching alleles
2 chromosomes with matching genes but possible different alleles
The number of human chromosomes is
23
46
92
64
Why do chromosomes all have a homologous pair?
Because DNA doubles during DNA Replication
Because you get one from your mom and one from your dad
Because pairs can divide easier
Because DNA is awesome
The relationship between chromosome number and the number of genes is
positively correlated
negatively correlated
not correlated
quadratically correlated
A _________________ zygote is formed when 2 ______________ gametes fuse together.
diploid, haploid
haploid, diploid
diploid, diploid
haploid, haploid
Female genotype
XX
XY
X
YY
Male genotype
XX
XY
X
YY
Only the 'male chromosome' contains the _________ gene
XY
SRX
SXY
SRY
The SRY gene causes
embryonic gonads to become testes and begin secreting testosterone
embryonic gonads to become ovaries and begin secreting estrogen
embryonic gonads to become testes and begin secreting estrogen
embryonic gonads to become ovaries and begin secreting testosterone
Different species have ______________ numbers of chromosomes
different
the same
The minimum number of chromosomes in a eukaryote is
1
2
4
46
The typical number of chromosomes in a species is always
even
odd
even or odd
Humans and chimpanzees have
the same number of chromosomes
23 and 24 chromosomes respectively
24 and 23 chromosomes respectively
we don't know how many chromosomes chimpanzees have
Scientist(s) that used an autoradiograph to get real images of chromosomes
Cairns
Chargaff
Meselson and Stahl
Avery
Which of the following is the correct order of the technique that produced images of DNA from E. coli?
DNA exposed to photographic film, DNA Replication occurs, DNA mixed with radioactive thymine, film is developed
DNA exposed to photographic film, DNA mixed with radioactive thymine, DNA Replication occurs, film is developed
DNA Replication occurs, DNA mixed with radioactive thymine, DNA exposed to photographic film, film is developed
DNA mixed with radioactive thymine, DNA Replication occurs, DNA exposed to photographic film, film is developed
Which is NOT a conclusion brought about by the imaging of chromosomes using autoradiography?
prokaryotic cells have circular DNA
the length of chromosomes from prokaryotic cells
DNA Replication is semi-conservative
prokaryotic cells have a singular origin or replication
Which of the following is the correct sequence for creating a karyogram?
a sample of cells is collected, drugs are used to inhibit mitosis, chromosomes are separated, chromosomes are stained, chromosomes are photographed, chromosomes are organized
drugs are used to inhibit mitosis, a sample of cells is collected, chromosomes are separated, chromosomes are stained, chromosomes are photographed, chromosomes are organized
a sample of cells is collected, drugs are used to inhibit mitosis, chromosomes are separated, chromosomes are stained, chromosomes are organized, chromosomes are photographed
a sample of cells is collected, drugs are used to inhibit mitosis, chromosomes are stained, chromosomes are separated, chromosomes are photographed, chromosomes are organized
A karyotype is ______________ and a karyogram is __________________
an organized visual of the chromosomes lined up from largest to smallest ; the # and type of chromosomes in an organism
the # and type of chromosomes in an organism ; an organized visual of the chromosomes lined up from largest to smallest
Which fetal sampling method gets cells from the placental tissue?
Chorionic villus sampling (CVS)
Amniocentesis
Ultrasound
Caesarean section
Which fetal sampling method gets cells from the amniotic fluid?
Chorionic villus sampling (CVS)
Amniocentesis
Ultrasound
Caesarean section
Normal
Triple X Syndrome (Trisomy X)
Down's Syndrome (Trisomy 21)
Edwards' syndrome (Trisomy 18)
Klinefelter's Syndrome (XXY)
By looking at the chromosomes is this individual biologically male or female? How do you know?
Female, because they have two X chromosomes
Male, because they have one X and one Y chromosome
This is called Turners syndrome, can you notice the mutation in the chromosomes?
Both chromosomes 1 are bent
There are too many chromosomes
There are too many of chromosome 3
There is no Y chromosome
Normal
Triple X Syndrome (Trisomy X)
Down's Syndrome (Trisomy 21)
Edwards' syndrome (Trisomy 18)
Klinefelter's Syndrome (XXY)
