1
Having gene versions that are different
heterozygous
aving gene versions that are the same
homozygous
A characteristic that all members of a species have
feature
An instruction for making a protein molecule
Any difference in traits between individual organisms
variation
A random change to a gene that sometimes results in a new trait
mutation
An organism produced as a result of reproduction
offspring
a specific form of a gene that provides instructions for making a particular protein molecule.
gene version
Differences in the structure of protein molecules affect how they connect to other protein molecules. This can result in different _____
traits
organisms_________ their genes through sexual reproduction.
inherit
Each parent randomly passes on ______ of its ______ copies of each gene to its offspring. Each offspring receives _____ copies of each gene ; _____ from each parents.
Each parent randomly passes on ONE of its TWO copies of each gene to its offspring. Therefore, each offspring receives TWO copies of each gene ; ONE from each parents.
An organism has _______copies of a gene for each feature.
An organism has TWO copies of a gene for each feature.
Each person in a family has the same traits. There are no differences in traits between parents and offspring or among siblings.
false
Traits, such as your hair or eye color, are determined by the proteins made by ribosomes in your body.
true
There are two genes that decide each of your traits, and those two genes are always exactly alike.
false
Genes come in pairs (alleles), and they can be different from each other
Step by Step Explanation:You inherit two copies of each gene - one from your mother and one from your father. These two copies (called alleles) can be either the same or different versions of the gene For example, for eye color you might get a brown allele from one parent and a blue allele from another. When the alleles are different, usually one is dominant and determines the trait you show
An offspring cannot have a trait if neither of its parents have it.
false
Genes can be recessive, meaning a trait can skip generations and appear in offspring even if parents don't show it
Step by Step Explanation:
Genes come in pairs - one from each parent
Some genes are dominant (show up even with one copy) and some are recessive (need two copies to show up)
Parents can carry recessive genes without showing the trait
When both parents pass on a recessive gene, the offspring will show that trait even though neither parent did
One wildcat in a family has a mutation for tooth sharpness, which means that there must have been a change in the wildcat's:
genes
How does an organism inherit every 2 copies of their genes?
1 copy comes from mom, 1 copy comes from dad
Two bears are unrelated but have the same proteins for ear shape. How will their ears compare with each other?
They will have the same ear shape since their proteins are the same and connect in the same way.
Step by Step Explanation:
Proteins are the building blocks that determine physical traits in organisms
When two organisms have the exact same proteins for a trait, they will develop that trait in the same way
Since these bears have identical ear-shape proteins, their ears will form identically, even though they're unrelated
Wolf 2 has copies of a gene that are the same as each other. How does this affect the number of proteins each wolf has?
Wolf 1 was two types of protein, Wolf 2 has 1 type of protein
A tree frog has a mutation for their poison feature. This means:
there must have been a change in the frog's genes.
A mutation is a change that occurs in an organism's DNA. DNA contains genes which carry instructions for all characteristics of an organism
When we say a frog has a mutation for its poison feature, it means there has been a change in the genes related to poison production. Therefore, the only thing we can be certain of is that there was a genetic change
A father sheep has curly wool while a mother sheep has straight wool. Which of these statements explains why one of their baby lambs has curly wool?
he baby lamb inherited one copy of the gene for wool shape from its father and one copy from its mother. That gene combination instructs for proteins that make its wool curly.
Three tigers have different parents. They all have the same proteins for stripe pattern in their cells. What can you say about the tigers' stripe patterns?
They will have the same stripe patterns since their proteins for stripe pattern are the same so the proteins will connect in the same way.
Two goldfish have different parents. One fish has a split tail and the other does not. Why do the goldfish have tails with different shapes?
The goldfish have different versions of the gene for tail shape, which instruct for different proteins that connect in different ways to make different tail shapes.
There are two junco birds that each have different proteins in their cells for beak pointiness. They have different parents. What can you say about the birds' beak pointiness?
They will have different beak pointiness since their proteins for beak pointiness are different so the proteins will connect in different ways.