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1 UNIT 4 - GENETICS – HEREDITY QUIZ REVIEW 1 TRAITS SUCH AS AN INDIVIDUAL’S SKIN, HAIR, AND EYE COLOR RESULT FROM A. ONE GENE ACTING ALONE B. ONE ALLELE FROM EACH PARENT ACTING TOGETHER C. SEVERAL GENES ACTING TOGETHER D. ONE DOMINANT ALLELE 1 TRAITS SUCH AS AN INDIVIDUAL’S SKIN, HAIR, AND EYE COLOR RESULT FROM A. ONE GENE ACTING ALONE B. ONE ALLELE FROM EACH PARENT ACTING TOGETHER C. SEVERAL GENES ACTING TOGETHER D. ONE DOMINANT ALLELE 2 THE DIFFERENT FORMS OF A GENE THAT DECIDES A CHARACTERISTIC ARE KNOWN AS A. ALLELES B. PHENOTYPES C. GENES D. ALBINISM 2 THE DIFFERENT FORMS OF A GENE THAT DECIDES A CHARACTERISTIC ARE KNOWN AS A. ALLELES B. PHENOTYPES C. GENES D. ALBINISM 3 The allele for freckles, F, is dominant among humans. If a woman with freckles (FF) and a man without freckles (ff) have children, what are the possible genotypes of the children? A.Ff B.Ff, ff C. FF, Ff, ff D. ff 3 The allele for freckles, F, is dominant among humans. If a woman with freckles (FF) and a man without freckles (ff) have children, what are the possible genotypes of the children? A.Ff B.Ff, ff C. FF, Ff, ff D. ff 4 WHICH ONE OF THE FOLLOWING BEST DESCRIBES THE DIFFERENCE BETWEEN THE MEANING OF PHENOTYPE AND GENOTYPE? A. A phenotype is the entire genetic makeup of an organism, whereas a genotype is the combination of genes for one specific trait. B. A phenotype is the appearance of an organism, whereas a genotype is the genetic makeup of an organism 4 WHICH ONE OF THE FOLLOWING BEST DESCRIBES THE DIFFERENCE BETWEEN THE MEANING OF PHENOTYPE AND GENOTYPE? A. A phenotype is the entire genetic makeup of an organism, whereas a genotype is the combination of genes for one specific trait. B. A phenotype is the appearance of an organism, whereas a genotype is the genetic makeup of an organism 5 What is heredity? A. TRAITS PASSING FROM OFFSPRING TO PARENTS B. TRAITS PASSING FROM PARENTS TO OFFSPRING C. PLANTS THAT ARE CROSS-POLLINATED D. THE RATIO OF DOMINANT TO RECESSIVE 5 What is heredity? A. TRAITS PASSING FROM OFFSPRING TO PARENTS B. TRAITS PASSING FROM PARENTS TO OFFSPRING C. PLANTS THAT ARE CROSS-POLLINATED D. THE RATIO OF DOMINANT TO RECESSIVE 6. The different forms of6a gene that decides a characteristic are known as A. Alleles B. Phenotypes C.Albinism D. Genes 6 The different forms of a gene that decides a characteristic are known as A. Alleles B. Phenotypes C.Albinism D. Genes 7 What are the structures where genes are located? A. Cytosine B. Molecules C. Chromosomes D. nucleotides 7 What are the structures where genes are located? A. Cytosine B. Molecules C. Chromosomes D. nucleotides 8 What is a plant that has two dominant genes or two recessives genes called? A. Organism B. Genotype C. Homozygous D. Heterozygous 8 What is a plant that has two dominant genes or two recessives genes called? A. Organism B. Genotype C. Homozygous D. Heterozygous P P PP p Pp 9. Look at 9the diagram. If purple P (P) is dominant, and white (p) is Pp recessive, what color will one out of every four of the offspring pp be? a.Purple b. white P P PP p Pp 9 P Look at the diagram. If purple Pp (P) is dominant, and white (p) is recessive, what color will one pp out of every four of the offspring be? a.Purple b. white 10 What did Mendel discover about recessive traits? A. Recessive traits reappear in the 2nd generation B. Recessive traits never disappear C. Recessive traits never appear in the 2nd generation D. Recessive traits become dominant 10 What did Mendel discover about recessive traits? A. Recessive traits reappear in the 2nd generation B. Recessive traits never disappear C. Recessive traits never appear in the 2nd generation D. Recessive traits become dominant 11 R r R RR Rr r Rr ?? In some plants, the allele for round seeds (R) is dominant over wrinkled seeds (r). Which of these genotypes will accurately complete the Punnett square above? A. A. RR C. rR B. B. Rr D. rr 11 R r R RR Rr r Rr ?? In some plants, the allele for round seeds (R) is dominant over wrinkled seeds (r). Which of these genotypes will accurately complete the Punnett square above? A. A. RR C. rR B. B. Rr D. rr P p P PP Pp Pp pp p 12 Look at the table. What is the probability that the offspring will be heterozygous? 25% c. 50% 75% d. 100% P p P PP Pp Pp pp p 12 Look at the table. What is the probability that the offspring will be heterozygous? 25% c. 50% 75% d. 100%
