Key Definitions
A dominant gene is a gene that will be ___________.
What is shown/seen.
Many cells have a nucleus that contains chromosomes. These chromosomes carry genes that are composed of...
A) Hormones
B) DNA molecules
C) Minerals and Water
D) Undigested food molecules
What is B- DNA molecules.
What a pedigree chart is used for.
What is to track a given trait (phenotype) through two or more generations of a family.
Fill in the punnett square for Rr x rr. What are the offsprings genotypes?
What is Rr, rr, Rr, rr.
A new variety of tomato is better tasting and can be stored longer than other tomato varieties. This new tomato is produced by placing an additional gene segment into the cells of the tomato plant. This process is known as _________ ___________.
What is genetic engineering.
A recessive gene is a gene that will be __________.
What is hidden/not seen.
What is the function of DNA in the cell?
A) Regulating the movement of nutrients
B) Storing and releasing chemicals
C) Carrying genetic information
D) Providing energy for activities
What is C- Carrying genetic information.
In a pedigree chart, male twins would be represented by _________.
What is two squares connected by a triangular shape.
Create a punnett square for the following situation: In humans, dimples are dominant to no dimples. Show the cross between a person who has two genes for dimples with a person who has two genes for no dimples.
What is DD x dd= Dd, Dd, Dd, Dd.
____________ _____________ is a process used by some farmers where two organisms are selected to breed with one another.
What is selective breeding.
______________ means to have two of the same alleles.
What is homozygous.
Chromosome is to nucleus as DNA is to...
A) Cytoplasm
B) Gene
C) Cell membrane
D) Chloroplast
What is B-gene.
___________ people in this family have dimples.
What is 5.
In rats, brown fur is dominant to white fur. A rat who is heterozygous is crossed with a homozygous brown rat. What percent of their kids will have white fur?
What is 0%.
Identify if the example below is an example of genetic engineering, selective breeding, or neither. A farmer mated his cattle with larger cattle. The offspring weighed more and produced more meat. This is an example of _________ ________.
What is selective breeding.
_________________ are different versions of a trait.
What is alleles.
A cells chromosome contain _______.
A) Genes
B) Chlorophyll
C) Sperm
D) Eggs
What is A-genes.
The relationship between #1 and #2 is they are ___________.
What is married.
In pea plants, smooth seeds are dominant to wrinkled seeds. A pea plant that is has heterozygous smooth seeds is crossed with a pea plant that has wrinkled seeds. What percent of their offspring will have smooth seeds?
What is 50%.
Human activities such as selective breeding and advances in __________ _________________ may affect the variations of species.
What is genetic engineering?
_______________ is the passing on of physical or mental characteristics genetically from one generation to another.
What is heredity.
What are genes composed of?
A) Offspring
B) DNA
C) Cells
D) Traits
What is B- DNA.
#6 and #9 have _________ children whose genders are _________________________.
What is 3 children, two females and one male.
In humans, brown eyes are dominant to blue eyes. If a woman with blue eyes has kids with a man who is heterozygous, then what percent of their children will be homozygous?
What is 50%.
Genetic engineering and selective breeding are related because _________________________________________.
What is selective breeding is an example of genetic engineering.