Mendel & History
The scientist known as the “Father of Genetics.”
Who is Gregor Mendel?
An organism with two identical alleles for a trait.
➡️ What is homozygous?
A diagram used to predict the outcome of a genetic cross.
What is a Punnett square?
The molecule that carries genetic information.
What is DNA?
An allele that masks the expression of another allele.
What is a dominant allele?
The organism Mendel used in his experiments.
What are pea plants?
An organism with two different alleles for a trait.
What is heterozygous?
A cross involving one trait.
What is a monohybrid cross?
The process that produces gametes.
What is meiosis?
An allele that is only expressed when two copies are present.
What is a recessive allele?
Mendel discovered that traits are controlled by discrete units now called this.
What are genes?
The physical expression of a trait.
What is phenotype?
The expected ratio of phenotypes in a simple dominant/recessive monohybrid cross.
What is 3:1?
The structure made of DNA and protein found in the nucleus.
What is a chromosome?
Inheritance where both alleles are fully expressed.
What is codominance?
This law states that allele pairs separate during gamete formation.
What is the Law of Segregation?
The genetic makeup of an organism.
What is genotype?
A cross involving two different traits.
What is a dihybrid cross?
The phase of meiosis where homologous chromosomes separate
What is Anaphase I?
Inheritance where the phenotype is a blend of two traits.
What is incomplete dominance?
This law explains how different traits are inherited independently of each other.
What is the Law of Independent Assortment?
An alternative form of a gene.
What is an allele?
The expected phenotypic ratio in a dihybrid cross.
What is 9:3:3:1?
The process where chromosomes exchange genetic material.
What is crossing over?
Traits controlled by more than one gene
What is polygenic inheritance?