Genes & Chromosomes
DNA & DNA Structure
Punnett Squares
Selective Breeding & Genetic Variations
Genetics
100
True or False:
Traits are passed down from parents to the offspring
What is true?
100
Whe molecule that carries genetic information for the development and functioning of an organism.
What is DNA?
100
A diagram that shows the possible outcomes of a genetic cross between two individuals is known as __________________________.
What is a Punnett Square?
100
Crossing a Labrador retriever and a poodle on purpose is an example of _________ breeding.
What is selective breeding?
100
Letters that represent actual genes are called ________.
What is genotypes?
200
Different forms of a gene that are received from parents are called ____________.
What is Alleles?
200
When looking at the structure of base pairs
Adenine (A) binds to __________.
(You can say the name or just the letter)
What is Thymine (T)?
200
Name the 2 possible phenotypes from the Punnett square below. Pink is dominant over white flowers.
What is 75% Pink & 25% White?
200
A red and white flower are crossed and the result is the picture below. This shows what kind of dominance.
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What is incomplete dominance?
200
Two identical alleles of a particular gene or genes (HH,hh)
What is homozygous?
300
A thread like structure found inside the nucleus containing genes.
What is chromosome?
300
A strand of DNA is made of a deoxyribose sugar, a phosphate group, and a _______________ base.
What is nucleotide?
300
You cross an Tt x tt plant. If Tall is dominant to short, what percentage of the offspring would you expect to have short stems?
What is 50%?
300
This type of dominance is shown below
What is Codominance?
300
The way an organism looks is referred to as this.
What is a phenotype?
400
Chromosomes can be found in this area of the cell.
What is the nucleus?
400
The structure of DNA can be described in these two words.
What is double helix?
400
Brown hair is dominant to blonde hair. Both of Kim's parents have brown hair, but Kim has blonde hair. Why does Kim have blonde?
Both of Kim's parents carry the gene for blonde hair.
or
Both of Kim's parents are heterozygous.
400
This is another way to describe an organism that is heterozygous for a trait (hint* it starts with an H)
What is hybrid?
400
This type of cell reproduction ensures that daughter cells are genetically identical to the parent cell.
What is mitosis?
500
A scar on your leg is an example of this kind of trait.
What is learned or acquired?
500
Given the genetic code CGAT the complementary strand would be ______________.
What is GCTA?
500
A white flower WW is crossed with a red flower RR. These flowers experience incomplete dominance. What percentage of phenotypes will be pink?
What is 100%?
500
This is type of selective breeding happens when pollen from one plant is transferred to another in an effort to achieve the most desirable traits.
What is cross pollination?
500
Gregor Mendel discovered important facts about heredity using this plant.
What is a pea plant?