Genetics Jeopardy

1. Genetics Jeopardy

3. 100 Crossing over occurs during which phase of meiosis? A).prophase I B).anaphase I C).telophase I D).prophase II E).metaphase II A. Prophase I

4. 200 The particular position of a gene on a chromosome is known as a(n) A).allele B).tetrad C).chiasma D).locus E).map distance D. Locus

5. 300 The frequency of crossing over between any two linked genes is A).higher if they are recessive B).difficult to predict C).determined by their relative dominance D).the same as if they were not linked E).proportional to the distance between them E

6. 400 Mitosis and cytokinesis result in the formation of ______; meiosis and cytokinesis result in the formation of ________. A).four diploid cells ... four haploid cells B).two diploid cells ... two haploid cells C).two diploid cells ... four haploid cells D).two diploid cells ... two diploid cells. E).four haploid cells ... two diploid cells C

7. 500 During meiosis, homologous chromosomes sometimes "stick together" and do not separate properly. This phenomenon is known as _____. A).cellular sterility B).meiotic failure C).gametic infertility D).nondisjunction E).sticky chiasmata D

8. 100 An allele is _____. A).a type of chromosome B).the dominant form of a gene C).a variety of pea plant used by Mendel D).an alternative version of a gene E).the recessive form of a gene D

9. 200 GgTt pea plants can produce _____________ type(s) of gametes, but a ggtt plant can produce _____________ type(s) of gametes. A).one ... two B).two... one C).four ... two D).four ... one E).one ... One D.

10. 300 In a certain plant, the alleles A, B, and C are completely dominant to the alleles a, b, and c. A plant with the genotype AABbcc will have the same phenotype as the plant with the genotype _____. A).AAbbcc B).aabbcc C).AaBBcc D).AABBCc E).none of the above C.

11. 400 Crossing a known genotype with an individual with an unknown genotype is known as this. Testcross

12. 500 Pea flowers may be purple (W) or white (w). Pea seeds may be round (R) or wrinkled (r). What proportion of the offspring from the cross WwRr x WwRr will have white flowers and wrinkled seeds? A).1/16 B).3/16 C).8/16 D).9/16 E).all of them A.

13. 100 In crossing a homozygous recessive with a heterozygote, what is the chance of getting an offspring with the homozygous recessive phenotype? A).0% B).25% C).50% D).75% E).100% C.

14. 200 The ABO blood group system in humans is an example of A).incomplete dominance B).codominance C).pleiotropy D).epistasis E).penetrance B. Codominance

15. 300 A man who carries an X-linked allele will pass it on to A).all of his daughters B).half of his daughters C).all of his sons D).half of his sons E).all of his children A.

16. 400 Skin color is controlled by more than one gene. Therefore it is this type of inheritance. Polygenic

17. 500 Use the following choices to answer questions 1-3. A).0 B).1/16 C).1/4 D).1/2 E).3/4 1).Probability that the genotype Aa will be produced by the parents Aa X Aa. 2).Probability that the genotype Rr will be produced by the parents Rr X rr. 3).Probability that the genotype TTSs will be produced by the parents TTSs X TtSS. 1. D 2. D 3. C

18. 100 A couple who are both carriers for the gene for cystic fibrosis have two children who have cystic fibrosis. What is the probability that their next child will have cystic fibrosis? A).0% B).25% C).50% D).75% E).100% B.

19. 200 What do all human males inherit from their mother? A).mitochondrial DNA B).X chromosome C).Hair Color D).Only A and B are correct E).A, B, and C are correct D.

20. 300 A mammalian zygote with which of the following chromosomal abnormalities will NEVER develop into a viable embryo? A).YO B).XO C).XXX D).XXY E).XXXY A.

21. 400 Huntington's disorder is due to an autosomal dominant allele. If a heterozygous male marries a normal female, what percentage of the offspring will have Huntington's? A).0% B).25% C).50% D).75% E).100% A.

22. 500 Once transcribed, eukaryotic RNA typically undergoes substantial alterations that includes A).excision of introns B).fusion into circular forms known as plasmids C).linkage to histone molecules D).union with ribosomes E).fusion with other newly transcribed mRNA A.

23. 100 Chromosomes of diploid organisms that are NOT involved in sex determination are called _____. A).autosomes B).indeterminant chromosomes C).mitotic chromosomes D).heterochromosomes E).nucleosomes A. Autosomes

24. 200 Fetal cells may be removed along with fluid from the womb by a process known as _____. A).karyotyping B).uterine tapping C).amniocentesis D).sonogramming E).chorionic villus sampling C.

25. 300 If a fragment of a chromosome breaks off and then reattaches to the original chromosome at the same place but in the reverse direction, the resulting chromosomal abnormality is called _____. A).a deletion B).an inversion C).a translocation D).a nondisjunction E).polyploidy B.

26. 400 Which of the following descriptions best fits the class of molecules known as nucleotides? A).a nitrogen base and a phosphate group only B).a nitrogen base and a five-carbon sugar C).a nitrogen base, a phosphate group, and a five-carbon sugar D).a five-carbon sugar, a phosphate group, and a purine E).a pyrimidine, a purine, and a six-carbon sugar C.

27. 500 The problem of replicating the lagging strand – that is, adding bases in the 3’  5’ direction – is solved by DNA through the use of A).base pairing B).replication forks C).the unwinding enzyme, helicase D).Okazaki fragments E).topoisomerase D.