Ch Heredity Flashcards
What is heredity?
Heredity is the passing on of physical or mental characteristics genetically from one generation to another.
True or False: Genes are the basic units of heredity.
True
What is a genotype?
A genotype is the genetic makeup of an organism.
What is a phenotype?
A phenotype is the physical appearance of an organism.
What is a dominant allele?
A dominant allele is an allele that is always expressed, even if only one copy is present in the genotype.
What is a recessive allele?
A recessive allele is an allele that is only expressed when two copies are present in the genotype.
What is a Punnett square used for?
A Punnett square is used to predict the possible genotypes and phenotypes of offspring in a genetic cross.
What is a homozygous genotype?
A homozygous genotype is one in which both alleles for a gene are the same.
What is a heterozygous genotype?
A heterozygous genotype is one in which the alleles for a gene are different.
What is the Law of Segregation?
The Law of Segregation states that each organism has two alleles for each trait and that these alleles separate during the formation of gametes.
What is heredity?
Heredity is the passing on of physical or mental characteristics genetically from one generation to another.
True or False: Genes are the basic units of heredity.
True
What is a genotype?
A genotype is the genetic makeup of an organism.
What is a phenotype?
A phenotype is the physical appearance of an organism.
What is a dominant allele?
A dominant allele is an allele that is always expressed, even if only one copy is present in the genotype.
What is a recessive allele?
A recessive allele is an allele that is only expressed when two copies are present in the genotype.
What is a Punnett square used for?
A Punnett square is used to predict the possible genotypes and phenotypes of offspring in a genetic cross.
What is a homozygous genotype?
A homozygous genotype is one in which both alleles for a gene are the same.
What is a heterozygous genotype?
A heterozygous genotype is one in which the alleles for a gene are different.
What is the Law of Segregation?
The Law of Segregation states that each organism has two alleles for each trait and that these alleles separate during the formation of gametes.
