Vocabulary
Key Concepts
Spiders
Other Animals
Final Jeopardy
100
An instruction for making a protein molecule
gene
100
Can organisms have different proteins in their cells for a particular feature?
Yes
100
Two spiders have the same parents and they were raised in the same environment. Are they guaranteed to have the same traits?
No
100
Why is this bird blue?
a. its genes are blue
b. it is homozygous
c. it eats blue food
d. its genes code for proteins that connect to make blue feathers
d. its genes code for proteins that connect to make blue feathers
100
Key concept 7
What is...
200
A type of large molecule that performs important functions inside organisms
Protein
200
How many copies do you have of each gene?
Two
200
A spider is homozygous for silk flexibility. How many different silk flexibility proteins does it have in its cells?
One
200
This dog has curly fur, but its mother has straight fur. Why does this dog have curly fur?
a. its genes are curly
b. its genes code for proteins which connect to make curly fur
c. it inherited all of its genes from its father
d. it grew up in a different environment from its mother
b. its genes code for proteins which connect to make curly fur
200
True or false: The proteins in your cells are determined by what proteins you eat in your environment.
Why?
False. Your proteins are determined by your genes
300
The process in which two parents pass on their genes to create offspring
sexual reproduction
300
What determines an organisms TRAITS?
Its protein molecules
300
Two spiders have different parents, but they have the same silk flexibility. How is this possible?
They must have the same silk flexibility proteins
300
The wing cells of dragonflies have proteins that connect together. In one dragonfly, the structure of the proteins in the wing cells changed, but the amount of that type of protein in the cell stayed the same.
What happened to the function of that type of protein?
A.The amount of that type of protein stayed the same, so its function doesn’t change.
B.The changed protein connects differently, but its function doesn’t change.
C.The changed protein connects differently, so its function changes.
D.The changed protein connects the same, but its function changes.
C. The changed protein connects differently, so its function changes.
300
True or false: Two organisms with the same proteins for a trait will always have the same trait because the proteins connect the same way, even if the organisms have different parents.
Why?
True! Proteins determine an organisms traits more than anything else
400
A specific form of a gene that provides instructions for making a particular protein molecule.
gene version
400
What determines the function of a protein molecule?
Its structure and how it connects to other protein molecules
400
Both parents are heterozygous for silk flexibility (F1F2). What are the possible gene combinations for their offspring?
F1F1, F1F2, F2F2
400
Two cats have different parents and they grew up in different environments, but they have the same proteins for fur color. Will they have the same fur color?
Yes!
400
True or false: Even if two organisms have the same proteins for a trait, if they are raised in different environments then that trait will be different for both organisms.
Why?
False. An organism's proteins determine its traits much more than the environment it's raised in.
500
A change that occurs to an organisms genes
Mutation
500
Why do siblings and parents differ from each other?
Offspring inherit different combinations of gene versions from parents
500
Two spider parents with medium silk flexibility have offspring. One of their offspring has very flexible silk, and one has low flexibility silk. How did the offspring end up with traits that are different from the traits of their parents?
They inherited different combinations of genes. Both parents were heterozygous (F1F2), and each child was homozygous with a different gene version (F1F1 and F2F2).
500
There are two wolves that have the same proteins for paw size in their cells. The wolves have different parents. What can you say about the wolves' paw size?
They will have the same paw size since their proteins for paw size are the same so the proteins will connect in the same way.
500
True or false: Genes connect to each other to control traits.
Why?
False. Genes are instructions for proteins, and proteins connect to each other to control traits.