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WorksheetsHeredity & DNA: What Makes Us Unique!
Total questions: 20
Worksheet time: 12mins
A _____ is an observable characteristic that is passed down from parent to child.
Genotype
Allele
Trait
Heredity
What type of plant did Gregor Mendel use in his experiments?
Peony Plant
Pea Plant
Hibiscus Plant
Spider Plant
What traits did Mendel find in his experiments?
Tall and Short
Purple & White Flowers
Hard & Soft
None of the above
What type of trait always appears in the first generation (F1)?
Primary
Secondary
Recessive
Dominant
What type of trait seems to back off, disappear or recede?
Secondary
Recessive
Primary
Dominant
Which alleles are dominant?
H
y
h
K
Which of these allele combinations are homozygous?
HH
Kk
ff
Yy
Which of these allele combinations are heterozygous?
Pp
OO
nn
Ll
What is Mendel's Ratio?
5:6
4:3
2:1
3:1
If a male is homozygous dominant, and a female is heterozygous, what is the percentage of the offspring being heterozygous?
0%
25%
50%
75%
A _____ is a section of DNA that determines a trait.
Trait
Genotype
Gene
Phenotype
A(n) ______ is different forms of a gene, and are represented by capital and lowercase letters (HH, hh, Hh).
Allele
Gene
DNA
Genotype
A _______ is the physical that that can be observed/the appearance of an organism.
Phenotype
Trait
Allele
Gene
___________ _________ can be written as having two dominant alleles for a trait (ex. AA).
Homozygous
Heterozygous
Homozygous Dominant
Homozygous Recessive
___________ _________ can be written as having two recessive alleles for a trait (ex. aa).
Homozygous
Homozygous Dominant
Heterozygous
Homozygous Recessive
________ is having two different alleles for a trait, one dominant one recessive (ex. Aa)
Homozygous
Heterozygous
Homozygous Dominant
Heterozygous Recessive
Which of the following is NOT one of the nitrogen bases in DNA?
Adenine
Guanine
Cytinson
Thymine
Which of the following is NOT needed for DNA?
Sugar (deoxyribose)
Phosphate
Nitrogen Base (GCAT)
Selenium
How many strands does DNA have?
3
4
1
2
What type of structure is the DNA called?
Double ladder
Staircase
Twisted helix
Double helix
