u4p2 Quiz

What is the study of heredity known as?

• Allele

• Genotype

• Genetics

• Probability

What does the law of segregation state?

• Genes separate independently of one another in meiosis

• Two alleles for each trait separate during meiosis

• Both alleles for a gene are fully expressed

• Homologous chromosomes fail to separate

Which term describes a trait controlled by two or more genes?

• Gamete

• Polygenic trait

• Multiple alleles

• Codominance

What is a gamete?

• A sex cell

• A genetic makeup of an organism

• Physical characteristics of an organism

• Different forms of a gene

What is the term for having two identical alleles for a particular gene?

• Heterozygous

• Homozygous

• Phenotype

• Genotype

What does "heterozygous" mean?

• Having two identical alleles for a trait

• Having two different alleles for a trait

• Having more than two alleles for the same gene

• The physical characteristics of an organism

What is the difference between phenotype and genotype?

• Phenotype is the genetic makeup, while genotype is the physical characteristics

• Phenotype is the physical characteristics, while genotype is the genetic makeup

• Phenotype is having two identical alleles, while genotype is having two different alleles

• Phenotype is the likelihood of an event occurring, while genotype is the study of heredity

What is a Punnett square?

• A. A model that predicts the outcome of a genetic cross

• B. A specific characteristic of an individual

• C. A segment of DNA that codes for a specific trait

• D. An allele that is always expressed

What does the term "dominant" refer to in genetics?

• A. An allele that is masked when a dominant allele is present

• B. The offspring of the P generation

• C. An allele that is always expressed

• D. The parental generation in a genetic cross

Which term describes the first two individuals that mate in a genetic cross?

• A. F1 generation

• B. Recessive

• C. P generation

• D. Trait