Why do some people have a third eye?
The monk who discovered the basic principles of heredity by studying peas.
Who is Gregor Mendel?
Your observable traits make up your _________________.
What is phenotype?
Different versions of genes are called _____________.
What are alleles?
A ______________ _______________ traces the occurrence of a trait through generations of a family.
What is a pedigree chart?
If an individual has different genotypes (ex. Bb), then they are ________________________.
What is heterozygous?
If you and your spouse have an offspring with a recessive trait, then both you and your spouse are ____________________?
What are carriers or heterozygous?
A _________________ occupies a specific location on both chromosomes in a pair.
What is a gene?
List the following in order from largest in size to smallest in size:
chromosome, alleles, nucleus, gene, cell
What are cell, nucleus, chromosome, gene, and alleles?
Where the chromosomes are located?
What is the nucleus?
If an individual has matching genotypes (ex. BB), then they are ______________________.
What is homozygous?
A diagram used to predict the outcome of a pair of mating individuals based on one trait.
What is Punnett Square?
The transmission of traits from parent to offspring.
What is inheritance?
Most all people have this number of chromosomes.
What is 23 pairs or 46 total?
To be "normal" and not carry the allele - you are _____________________ _______________?
What is homozygous dominant?
People with an extra chromosome have this genetic disorder.
What is Down Syndrome?
Explain how a child can have a genetic disorder when neither of the parents shows signs/symptoms of the disorder.
What is "both parents are carriers of a recessive trait and their child receives a recessive trait from each of them"? This causes the child to have the phenotype, while the parents don't show the disorder.
In a cross between two heterozygous parents, what is the probability that the offspring will be a hybrid?
What is 50%?
Your observable traits make up your __________________, while your _______________________ is determined by the combination of traits that you inherit from your parents through genes.
What are phenotype and genotype?
Two parents are homozygous for free earlobes. What is the likelihood that they would produce a child with attached earlobes? Why?
What is 0% chance to have a child with attached earlobes because the parents are not carriers of the recessive gene since they are homozygous.
In a pedigree chart, explain how siblings are placed in the chart.
Children are placed in the chart starting with the firstborn on the left and moving to the right after each sibling is born.
On a pedigree chart Roman numerals are used for this
What is identifying the generations?
Example: I. Grandparents, II. Parents, III. Children/Grandchildren
When genotypes express themselves as a combination of two alleles - Example: yellow fish + red fish = orange fish
What is incomplete dominance?
When genotypes express themselves as both alleles - Example: purple butterfly + yellow butterfly = spotted purple and yellow butterfly
What is codominance?
Create a Punnett Square with this information: Parent 1 has freckles (homozygous). Parent 2 doesn't have freckles. F = Freckles, f= no freckles. What are the alleles for each parent? Parent 1 _____, Parent 2 ______ What is the chance that these parents will have a freckled child? _______ Non-freckled child? ______
Parent #1 FF, Parent #2 ff, 100% for freckles and 0% for non-freckled child
Predict the phenotype of the following organism using the Punnett Square. Parent #1 Dd, Parent #2 dd. D = duck feet, d = dog feet What is the phenotype of the offspring?
What is 50/50 chance of having duck feet or dog feet?