14. Choose the correct answer. At pea clutch groups: 1. seven 2. fourteen 3. twenty eight 15. Choose the correct answer. The number of crossover gametes will be greater if the distance between the ge controlling the trait studied is equal to: 1. 10 Morganids 2.25 Morganids 35 Morganids 16. Choose the correct answer. Pleiotropy is a phenomenon in which: 1. The trait is controlled by several pairs of genes 2. The trait is controlled by one pair of genes 3. one pair of genes controls the manifestation of several traits 17. Choose the correct answer. Crossover frequency depends on: 1. from the distance between the genes in the chromosomes 2. from the distance between the chromosomes 3. from the probability of meeting gametes 18. Choose the correct answers. When the AaBn genotypes in a male Drosophila fly is the gamete: 1.AB 2. AB 3. aB 4. as 19. Choose the correct answer. Crossover frequency is a value: 1. inversely proportional 2. directly proportional 3. geometric progression 20. Choose the correct answer. The distance between genes is measured in: 1. cm 2. in microns 3. in shares 4. in the morganids 21. Choose the correct answer. Gamete contains. 1. genes from different allelic pairs 2. a pair of homologous chromosomes 3. gene from allelic pair 22. Choose two correct answers. A variation curve reflecting the change of the trait within the normal reactic shows that the organisms: 1. with the average value of the trait occur with high frequency 2. with the average value of the trait occur with a low frequency 3. extreme values of the trait are rare 4. with average and extreme values have the same frequency of occurrence 23. Choose the correct answer The probability of an Rh conflict with a mother'Rh (-) marriage and a Rh ( father heterozygous for this trait is: 1. 50% 2. 100% 3. 0% 4 5 25% 75% 24. Choose two correct answers Eukaryotic DNA molecule: 1. ring-shaped 2 linear 3. single stranded 4. double-stranded 25. Choose answer. Linked inheritance of trains was established: 1. by T. Morgan 2. by G. Mendel 3. by D. Watson and F Crick 4. by W. Johannsen

14. Choose the correct answer. At pea clutch1. seven<br />2. fourteen<br />3. twenty eight<br /><br />Answer: 2. fourteen<br /><br />15. Choose the correct answer. The number of crossover gametes will be greater if the distance between the genes controlling the trait studied is equal to:<br />1. 10 Morganids<br />2. 25 Morganids<br />3. 35 Morganids<br /><br />Answer: 2. 25 Morganids<br /><br />16. Choose the correct answer. Pleiotropy is a phenomenon in which:<br />1. The trait is controlled by several pairs of genes<br />2. The trait is controlled by one pair of genes<br />3. one pair of genes controls the manifestation of several traits<br /><br />Answer: 3. one pair of genes controls the manifestation of several traits<br /><br />17. Choose the correct answer. Crossover frequency depends on:<br />1. from the distance between the genes in the chromosomes<br />2. from the distance between the chromosomes<br />3. from the probability of meeting gametes<br /><br />Answer: 1. from the distance between the genes in the chromosomes<br /><br />18. Choose the correct answers. When the AaBn genotypes in a male Drosophila fly is the gamete:<br />1. AB<br />2. AB<br />3. aB<br />4. as<br /><br />Answer: 1. AB<br /><br />19. Choose the correct answer. Crossover frequency is a value:<br />1. inversely proportional<br />2. directly proportional<br />3. geometric progression<br /><br />Answer: 1. inversely proportional<br /><br />20. Choose the correct answer. The distance between genes is measured in:<br />1. cm<br />2. in microns<br />3. in shares<br />4. in the morganids<br /><br />Answer: 4. in the morganids<br /><br />21. Choose the correct answer. Gamete contains.<br />1. genes from different allelic pairs<br />2. a pair of homologous chromosomes<br />3. gene from allelic pair<br /><br />Answer: 3. gene from allelic pair<br /><br />22. Choose two correct answers. A variation curve reflecting the change of the trait within the normal range shows that the organisms:<br />1. with the average value of the trait occur with high frequency<br />2. with the average value of the trait occur with a low frequency<br />3. extreme values of the trait are rare<br />4. with average and extreme values have the same frequency of occurrence<br /><br />Answer: 1. with the average value of the trait occur with high frequency and 3. extreme values of the trait are rare<br /><br />23. Choose the correct answer. The probability of an Rh conflict with a mother's Rh (-) marriage and a Rh (father heterozygous for this trait is:<br />1. 50%<br />2. 100%<br />3. 0%<br />4. 25%<br />5. 75%<br /><br />Answer: 1. 50%<br /><br />24. Choose two correct answers. Eukaryotic DNA molecule:<br />1. ring-shaped<br />2. linear<br />3. single-stranded<br />4. double-stranded<br /><br />Answer: 2. linear and 4. double-stranded<br /><br />25. Choose the correct answer. Linked inheritance of traits was established:<br />1. by T. Morgan<br />2. by G. Mendel<br />3. by D. Watson and F. Crick<br />4. by W. Johannsen<br /><br />Answer: 1. by T. Morgan