WorksheetsUnit 5 Biology
Total questions: 20
Worksheet time: 10mins
What is the center of a chromosome called?
Chromosome
DNA
Sister Chromatids
Centromere
What is a dominant trait?
2 alleles required to express the trait
6 alleles required to express the trait
1 allele required to express the trait
4 alleles required to express the trait
What is a genotype?
Genetic makeup of an individual
homozygous dominant : PP
Homozygous recessive : pp
Heterozygous : Pp
All of the above
What are sex-linked traits?
genes located on the X or Y chromosome
Usually affects males more than women
Women do not have Y chromosome but have 2 X chromosomes
All of the above
Can phenotypes change?
No
Maybe, idk
Yes
Do genotypes change?
Yes
No
idk
What are the 3 parts of nucleotides?
Cytosine, Adenine, Uracil
Deoxyribose, Phosphate group, Nitrogenous base
Deoxyribonucleic Acid
Adenine, Guanine, Thymine
Which of the following are purines?
Adenine, Guanine
Cytosine, Thymine
Thymine, Guanine
Cytosine, Adenine
Which of the following are pyrimidines?
Adenine, Cytosine
Adenine, Guanine
Cytosine, Thymine
Which pf the following is RNA base-pairing?
GCAT
GCAU
How many daughter cells are made during Meiosis?
4 unique cells
4 identical cells
2 unique cells
2 identical cells
How many daughter cells are made during mitosis?
4 identical cells
2 identical cells
4 unique cells
2 unique cells
How many chromosomes do human gametes have?
23
46
37
84
How many parents are needed for sexual reproduction?
1 parent
2 parents
How many parents are needed for asexual reproduction?
2 parents
1 parent
TRUE or FALSE: If an affected individual has 2 unaffected parents in a pedigree, the trait must be recessive.
False
True
TRUE or FALSE: In a pedigree, if a trait is dominant, it most likely will NOT show up in every generation.
True
False
TRUE or FALSE: In a pedigree, if a person in a generation has a dominant trait, it MUST be present in all previous generations.
True
False
An organisms's appearance is called a
phenotype
genotype
genetics
DNA
how many rings do purines have?
1 ring
3 rings
2 rings
zero rings
