Vocabulary 1
The passing of traits from parent to offspring is called.
What is heredity?
a genetic factor that blocks another trait; represented by a capital letter
What is a dominant trait?
What is a circle?
Cross a pure-bred Tall (T) and a pure-bred short (t). What percentage of offspring is heterozygous?
What is 100%?
A trait that will always show up as long as one allele is present.
What is a Dominant Trait?
When two alleles are the same they are called.
What is homozygous?
a genetic factor that is blocked by the presence of a dominant trait; represented by a lowercase letter
What is a recessive trait?
A male is shown as this on a pedigree.
What is a square?
Cross two heterozygous tall plants (Tt). What percentage of the offspring is tall?
What is 75%?
Type of reproduction that results in a wide genetic variation and requires two parents.
What is sexual reproduction?
When two alleles are different they are called.
What is heterozygous?
observable characteristic that is expressed as a result of an allele pair; physical appearance
What is a phenotype?
What does a shaded shape represent in a pedigree?
A person that has the trait that is being tracked.
Cross two hybrid tall plants (Tt). What plant is there 25% of?
**you must name both
What is homozygous dominant (TT) and homozygous recessive (tt)?
Type of reproduction that is both fast and energy efficient.
What is asexual reproduction?
One form or version of a gene. You get one from each parent.
What is an allele?
an organism’s allele pairs; particular genetic makeup
What is a genotype?
What does a half shaded shape represent on a pedigree chart?
A carrier of a trait.
Cross a homozygous tall and a heterozygous tall. What are the 2 genotypes present in the Punnett square?
What are TT and Tt?
If a sexually reproducing organism has 28 chromosomes in its body cells, how many chromosomes did it inherit from each parent?
What is 14?
What are Punnett Squares?
diagrammed family history that is used to study inheritance patterns of a trait through several generations and that can be used to predict disorders in future offspring
What is a pedigree?
Explain what the horizontal and vertical lines represent in a pedigree chart.
Horizontal= Marriage or Parents
Vertical= Offspring
Having dimples is a recessive trait. What genotypes would two parents without dimples have to have in order to have a child that does have dimples? Use D for the allele.
Both parents would need to be Dd. (heterozygous)
Give an example of a homozygous dominant genotype for height.
What is HH? (or 2 other capital letters)