Font size
WorksheetsBiology
Total questions: 29
Worksheet time: 16mins
When does crossing over occur?
Anaphase of mitosis
Prophase 1 of meoisis
Prophase of mitosis
Anaphase 2 of meiosis
Based on the karyotype below, this patient would be a
male with Trisomy 21
female with Trisomy 21
normal female
normal male
Homologous chromosomes are two chromosomes with identical DNA sequences.
True
False
A transgenic organism is best described as
An unmodified bacterial cell
An organism that contains foreign DNA
A clone
A gel electrophoresis
Cloning produces organism that are
genetically different from the original organism, similar to meiosis
genetically identical to the original organism, similar to meiosis
genetically identical to the original organism, similar to mitosis
genetically different from the original organism, similar to mitosis
Which of the following best explains why DNA fingerprints can be used to identify an individual, such as from a crime scene sample?
DNA is inherited from both maternal and paternal parents
DNA from 2 different species can be combined using restriction enzymes
Each individual has a unique DNA sequence, with the exception of identical twins
DNA is used to make proteins during protein synthesis
A nondisjunction mutation is caused by
chromosomes duplicating.
chromosomes fuse together.
chromosomes failing to separate properly.
a nitrogen base being inserted into the DNA sequence.
Genotypes determine the proteins that accumulate to give a phenotype.
True
False
The pedigree above shows the inheritance of color blindness in a family which is an X-linked trait. What is the genotype of II-6?
Xb Y
XB Xb
XB XB
XB Y
The pedigree above shows the inheritance of color blindness in a family which is an X-linked trait. What is the genotype of II-5?
Xb Y
XB Xb
Xb Xb
XB XB
A man with O blood is married to a woman with AB blood. What are the possible blood types of their children? (Select all that apply)
AB
B
O
A
If you crossed a white chicken with a black chicken and got a chicken with black and white feathers this would mean that this trait would be an example of:
Autosomal dominant trait
Incomplete dominant trait
Sex linked trait
Codominant trait
When does crossing over occur?
Prophase of mitosis
Anaphase of mitosis
Prophase 1 of meoisis
Anaphase 2 of meiosis
Sexual reproduction would be more advantageous than asexual reproduction for organisms living in an environment that is diverse and undergoes frequent changes.
True
False
Genotypes determine the proteins that accumulate to give a phenotype.
True
False
If two heterozygous individuals are crossed, what percent of their offspring are also expected to be heterozygous?
100
75
50
0
The numbers in Figure 10-1 represent the chromosome number found in each of the dog cells shown. The processes that are occurring at A and B are ____.
mitosis and fertilization
meiosis and pollination
mitosis and pollination
meiosis and fertilization
A white mouse whose parents are both white produces only brown offspring when mated with a brown mouse. The white mouse is most probably ____.
homozygous recessive
haploid
heterozygous
homozygous dominant
Only red tulips result from a cross between homozygous red and homozygous white tulips. This illustrates the principle of
complete dominance
independent assortment
segregation
incomplete dominance
The muscle cells of an elephant contain 62 chromosomes. How many chromosomes are in an elephant egg cell?
31
122
224
62
In mink, brown fur color is dominant to silver-blue fur color. If a homozygous brown mink is mated with a silver-blue mink and 8 offspring are produced, how many would be expected to be silver-blue?
6
8
0
3
When homologous chromosomes touch and swap segments of DNA it is called:
Mitosis
Oogenesis
Spermatogenesis
Crossing over
____but if the kittens were both black and white, that would show____
incomplete dominance
Complete Dominance
co-dominance
NA
Mitosis
Identical daughter cells
2N --> 1N
1 Division
Two daughter cells
Meiosis
Genetically different daughter cells
Four daughter cells
2 Divisions
2N --> 2N
Meiosis
Gametes
Somatic cells
2N --> 1N
2N --> 2N
Mitosis
Somatic cells
2N --> 2N
2N --> 1N
Gametes
heterozygous
Bb
BB
bb
homozygous
AA
bb
Ab
BB
