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WorksheetsDNA, mutations, traits
Total questions: 16
Worksheet time: 9mins
A ______ is a section of DNA that codes for a trait.
gene
genotype
phenotype
gender
Which of the following is not part of a chromosome
DNA
gene
cell
nitrogen base
Most mutations occur randomly
True
False
Examples of environmental factors for mutations are
harmful chemicals
exposure to x-rays
radiation
mistakes during replication
Mutations cause changes in _____.
elements
essential nutrients
proteins
fats
a (a) is a section or segment of DNA
Misspelling a word in a sentence is like a _______ in a gene
mutation
code
section
chromosome
Mutations are always harmful.
True
False
Most genes contain code to make
cookies
mutations
adaptations
protein
Each pair of chromosomes contains _______ variants of a gene. One from mom and one from dad.
two
three
four
five
Neck length among members of the same tortoise species is an example of a trait.
True
False
A mutation cannot be inherited.
True
False
Variations can be (a) , negative, or neutral
An example of a trait is the spot pattern in giraffes
True
False
How many nitrogen bases are there in DNA?
one
two
three
four
a nucleotide is a piece of DNA containing a nitrogen base and a __________ phosphate group
sugar
cytosine
guanine
