Mendel with a P
Geno/Pheno
Vocab
Punnett Squares
Miscellany
100
Gregor Mendel did this to pea plants to study different characteristics
What is CROSS-POLINATION
100
An organism's physical appearance is called this.
What is a phenotype?
100
the set of information that controls a trait; a segment of DNA on a chromosome that codes for a specific trait.
What is a gene?
100
In dogs, long tails are dominant over short tails. Cross a heterozygous tailed dog with a homozygous recessive dog. What is the probability that the dog will have a long tail? What is the probability that the dog will have a short tail?
What is 50%?
100
Any change in a gene or chromosome is called this.
What is a mutation?
200
Mendel used T to show the dominant allele for height, meaning tall. He used this letter to show the recessive allele.
What is t
200
This is the term that refers to the physical characteristics that are studied in genetics.
What is a trait?
200
a trait that is expressed only when two alleles are present; represented with a lower case letter.
What is a recessive trait?
200
Freckles=recessive. Cross a heterozygous parent with NO freckles with a parent with freckles. What is the probability that the offspring will have freckles?
What is 50%?
200
This many chromosomes are in every human cell?
What is 46 or 23 pairs?
300
The notation TT or AA to a geneticist means there are this many dominant alleles in a genotype.
What is 2 (two)
300
An organism's genetic type is called this.
What is a genotype?
300
The passing of traits from parents to offspring
What is heredity?
300
TT- 25%
Tt- 50%
tt- 25%
300
An organism that has two identical alleles for a trait is called this.
What is homozygous?
400
This is the probability of producing a tall pea plant from a genetic cross between two heterozygous, tall pea plants
What is 50% (or two in four)
400
Two different forms of a gene are called this.
What are alleles?
400
Having two DIFFERENT alleles for a trait.
What is heterozygous?
400
A plant with a dominant homozygous trait is crossed with a plant with a recessive homozygous version of that trait. What is the probability that the offspring will display the dominant trait in its phenotype?
100%
400
If this type of allele is present, its trait will appear in the organism.
What is dominant?
500
Gregor Mendel studied these types of plants throughout his work with heredity and genetics.
What is pea plants?
500
An organism with two different alleles is called this.
What is a hybrid?
500
2 different alleles for a trait (synonym: heterozygous)
What is a hybrid?
500
TT- 50%
Tt- 50%
500
Genes are carried from the parent to the offspring on structures called this.
What are chromosomes?