FREE AND STUDY GAMES ABOUT MASTERING BIO CH. 14

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FREE AND STUDY GAMES ABOUT MASTERING BIO CH. 14

EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

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-Guarantee passing score -23 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: What is the Law of Segregation?

Answer:

Mendel's first law, stating that the two alleles in a pair segregate into different gametes during gamete formation.

Question 2: What is complete dominance?

Answer:

The phenotype between the heterozygote and the homozygote are indistinguishable.

Question 3: What is a dominant allele?

Answer:

An allele that is fully expressed in the phenotype of the heterozygote.

Question 4: What is meant by "true-breeder"?

Answer:

An organism that produces offspring of teh same variety over many generations of self-pollination.

Question 5: What is a trait?

Answer:

one of two or more detectable variants in a genetic character.

Question 6: What is pleiotropy?

Answer:

The ability of a single gene to have multiple effects. Flower color affects seed color.

Question 7: Why do you use a Punnett Square?

Answer:

To study inheritance and show the predicted genotypic results of random fertilization in genetic crosses between individuals of known genotype.

Question 8: What is a recessive allele?

Answer:

An allele whose phenotypic effect is not observed in a heterozygote.

Question 9: What are multifactorial disorders?

Answer:

Disorders that are caused by several factors, for example heredity and environment. I.e. heart disease, diabetes, cancer, alcoholism.

Question 10: What is a testcross?

Answer:

Breeding an organism of unknown genotype with a homozygous recessive individual to determine the unknown genotype. The ratio of phenotypes int eh offspring reveals the unknown genotype.

Question 11: Define F1 generation.

Answer:

The first fillial, hybrid (heterozygous) offspring arising from a parental (P generation) cross.

Question 12: What is epistasis?

Answer:

A type of gene interaction in which the phenotypic expression of one gene alters that of another independently inherited gene. Laborador coat color.

Question 13: What is a ratio in Monohybrid cross?

Answer:

Genotype: 1:AA, 2:Aa, 1:aa Phenotype: 3:1

Question 14: What is a carrier?

Answer:

An individual who is heterozygous at a given genetic locus for a recessively inherited disorder. The carrier is phenotypically normal for the disorder but can pass it on to offspring.

Question 15: What is codominance?

Answer:

The phenotypes of both alleles are exhibited in the heterozygote because both alleles affect the phenotype in separate, distinguishable ways. Blood type.

Question 16: What is the ratio of Dihybrid cross?

Answer:

Phenotype: 9:3:3:1

Question 17: What is an allele?

Answer:

Any of the alternative forms of a gene that may produce distinguishable phenotypic effects.

Question 18: Define P generation.

Answer:

The true-breeding (homozygous) parent individuals from which F1 hybrid offspring are derived in studies of inheritance. "Parental".

Question 19: Define F2 generation.

Answer:

The offspring resulting from interbreeding (or self-pollination) of the hybrid F1 generation.

Question 20: What is incomplete dominance?

Answer:

The phenotype of heterozygotes is intermediate between the phenotypes of individuals homozygous for either allele.

Question 21: What is a pedigree?

Answer:

A diagram of a family tree showing the occurrence of heritable characters in parents and offspring over multiple generations.

Question 22: What is the Law of Independent Assortment?

Answer:

Mendel's second law, stating that each pair of alleles segregates or assorts independently of each other during gamete formation.

Question 23: What is a character?

Answer:

An observable heritable feature that may vary among individuals.