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WorksheetsGenetics Pre-Assessment
Total questions: 20
Worksheet time: 10mins
___________ is the process by which homologous chromosomes exchange parts of their DNA during the formation of gametes. B.8(A)
Chromosome Reduction
Crossing Over
Independent Assortment
Protein Synthesis
I don't know the answer.
The Law of _______________ is the random distribution of different pairs of chromosomes to gametes and states that one trait being passed down has nothing to do with another trait being passed down. B.8(A)
Independent Assortment
Crossing Over
DNA Replication
I don't know the answer.
African Lions (Panthera leo) have 38 chromosomes in their somatic cells. How many chromosomes will each daughter cell have after the final step of meiosis? B.8(A)
(a)
Which statement best describes the significance of the process shown in the picture? B.8(A)
The process allows organisms to grow and heal.
The process produces clones of the parent organism.
The process copies DNA before cell division.
The process creates genetic variation in the resulting cells.
I don't know the answer.
Achondroplasia is a disease that affects the formation of bones in humans. The allele for achondroplasia (A) is dominant to the unaffected allele (a). What would be the genotype for a human who is homozygous recessive for achondroplasia? B.8(B)
AA
Aa
aa
I don't know the answer.
In humans, the diploid number of chromosomes is 46. Knowing this, the haploid number of chromosomes in humans is ____. B.8(A)
23
46
69
92
I don't know the answer.
Penguins have 38 chromosomes in most of their cells.
How many chromosomes are in their sex cells? B.8(A)
I don't know the answer.
What type of chromosome number do gametes have? B.8(A)
Haploid (n)
Diploid (2n)
Triploid (3n)
Tetraploid (4n)
I don't know the answer.
This flower would be an example of which inheritance pattern? B.8(B)
polygenic traits
incomplete dominance
multiple alleles
codominance
I don't know the answer.
Recessive genes are ____? B.8(B)
strong genes
weak genes
BB
I don't know the answer.
_____________ refers to the inheritance of traits that are located on the sex chromosomes. B.8(B)
Sex-linked Inheritance
Codominance
Incomplete Dominance
Crossing Over
I don't know the answer.
Mice reproduce sexually. Mice offspring share about what percent of the mother's genetic code? B.8(A)
100%
25%
50%
0%
I don't know the answer.
In rabbits, black fur (B) is dominant over brown fur (b). If a rabbit has brown fur, what can you conclude about its genotype? B.8(B)
I don't know the answer.
What is the phenotype in the bottom right square? (Yellow is dominant and green is recessive) B.8(B)
I don't know the answer.
In pea plants, round and yellow are dominant traits, and wrinkled and green are recessive traits. How many potential offspring are heterozygous for both traits? B.8(B)
3
1
4
I don't know the answer.
In the cross shown in the picture between a parent with Type O blood and a parent with Type AB blood, what blood types are possible for their children? B.8(B)
A
AB
B
O
I don't know the answer.
Mendel's law of segregation states that during meiosis, the alleles that control each trait separate, and only _________________ from each pair is/are passed to the offspring. B.8(B)
I don't know the answer.
If polydactyly (born with extra toes/fingers) is a dominant trait in cats, then which of the following genotype(s) would produce a cat with extra toes? (Select all that apply.) B.8(B)
TT
Tt
tt
I don't know the answer.
_______ is a representation of an organism's genetic information, while _______ describes the organism's physical appearance. B.8(B)
Phenotype, Genotype
Genotype, Phenotype
I don't know the answer.
What is the primary cause of genetic variation during meiosis? B.8(A)
chromosomes lining up
"crossing over" of chromosomes
separation of chromosomes
chromosomes pulling apart
I don't know the answer.
