page 418
The genetic material that determines traits is called____ (418)
DNA
one strand of DNA is made of a chain of ___________419
nucleotides
This is responsible for building and repairing body structures. (420)
protein
A change in the sequence of a gene is called a __________ (424)
mutation
Traits that help organisms survive and reproduce are called ____________ (427)
adaptations
Double stranded DNA is organized into structures called _________. (418)
Chromosomes
How many different nucleotides are there? (419)
Four
proteins are made up of ____________ (420)
Amino Acids
Most mutations occur when the cell copies its _______for cell division. (424)
DNA
An adaptation can be a _________, a __________ or a ______________. (427)
structure, function or behavior
Offspring get one pair of chromosome from each _______. (418)
Parent
The nucleotide Adenine (A) always pairs up with the nucleotide ____________ (419)
Thymine (T)
How many types of amino acids are there that combine to make proteins? (420)
about 20
When DNA is copied, base pairs may be____________________________________ (424)
added, subtracted or deleted
How does the genetic change of the mole on page 427 help it survive?
It helps it locate prey better.
DNA is found in the ______________of the cell. (418)
nucleus
A segment of DNA that provides instruction for a trait is called a ___________ (419)
gene
A three base code on a gene is called a ________ (420)
triplet
Mutations may be _________, __________, or _________ to organisms. (424)
beneficial, neutral or harmful
When an organism has a mutation that helps it, and it reproduces, the offspring passes on the _______ to their offspring. (427)
mutation (or trait)
DNA molecules contain the information that determines the _______ of an organism. (418)
traits
Organisms that reproduce sexually have _____ versions of the same gene for each trait. (419)
Two
Proteins that help speed up a chemical reaction in the body are called ______________. (420)
Enzymes
UV radiation and toxic chemicals that cause genetic mutations are called ___________ (424)
mutagens
How could the Ocelot's patterned coat benefit him? (427)
They can hide better and wait for prey, or hide from animals that prey on them.