Genetics Vocab
The scientific study of heredity
Genetics
Avas mom has blue eyes and 2 ear piercings. Which would Ava inherit from her mom?
Blue Eyes
What are the chances 2 HH parents will have a HH child?
100%
What do we call the physical appearance of a trait in an organism?
Phenotype
Which type of trait can be masked by another trait?
Recessive
The passing of traits from parent to offspring
Are certain diseases genetic?
Yes
What tool is used to predict genetic outcomes?
Punnet Squares
In a plant G= green pods and g=yellow pods.
What is the phenotype of genotype Gg?
Green Pods
If a dominant allele is present in an organism, what happens to the recessive allele?
It is not expressed
The offspring of many generations that have the same traits
Purebred
In humans, freckles are a dominant trait (F), and no freckles is recessive (f).
What is the phenotype of a person with genotype Ff?
Freckles
What do you call an allele that masks another allele?
Dominant Allele
An organism has the genotype aa.
What term best describes this genotype?
Homozygous Recessive
Which situation best demonstrates a recessive trait being expressed?
When two recessive alleles are inherited.
Process of making changes in the DNA code of living organisms.
Genetic Engineering
In humans, attached earlobes are recessive (e), and free earlobes are dominant (E).
A person has attached earlobes.
What must their genotype be?
ee
What is the probability of a Homozygous Dominant and a Homozygous Recessive Parent having a heterezygote?
100%
In mice, B = black fur and b = brown fur.
Two heterozygous mice are crossed (Bb × Bb).
What genotype produces the recessive phenotype?
bb
A trait appears in every generation of a family.
Is this trait more likely dominant or recessive?
Dominant
A chart or "family tree" that tracks which members of a family have a particular trait?
Pedigree
In humans, widow’s peak is dominant (W) and a straight hairline is recessive (w).
Two parents both have a widow’s peak and produce a child with a straight hairline.
What are the genotypes of both parents?
Ww and Ww
What are the chances of 2 heterozygote parents having a heterozygote?
25%
In humans, albinism is a recessive trait (a), while normal pigmentation is dominant (A).
A man with normal pigmentation has a mother who is albino.
What is the man’s genotype?
Aa
Two parents do not show a certain trait, but their child does show it.
Is the trait dominant or recessive?
Recessive