Search. 0000015219 00000 n What will be the appearance (phenotype) of the F1 plants? You are encouraged to work through the problems first before you look up the answers. 2. ` a — ˜ Ô ı û û û ö û ö û ñ û ö û ì ì æ Ü Ü û ö Ö ö û ì ì „h^„h „Ğ„h^„Ğ`„h „8^„8 If a couple already has a daughter, what is the probability that the next child will be a son? Hypothetically, brown color (B) in naked mole rats is dominant to white color (b). endstream endobj 222 0 obj<>/Size 182/Type/XRef>>stream If person III-1 and III-2 were to marry (they are first cousins), what is the probability that their child will be affected? Practice Problems for Genetics, Session 1: Mendel's Laws Question 1 One could propose a genetic model to explain the inheritance of left- and right-handedness in humans. Who knows; perhaps the most … Search for courses, skills, and videos. Answers to these problems will be posted next week. 0000012648 00000 n In rabbits, mono-colored fur (F) is dominant over spotted fur (f), and straight ears (S) is dominant over floppy (s). x�b```b``]������� Ȁ ��@Q� {*��4�f� ,"�&5^oAc��^1y|����uUi�@ ��h 1�Ic ��``�@�(�����H��X�� ��b��y|�^1J0\b|���|�%�)�A���َ��]�Kn240J1�b���ȴ���X1��O~^�3?��|3��0ȰL��G��ɧ�8܏A�c`�וdH20�/Ҍ@� � �6Bl Practice Problems for Genetics, Session 1: Mendel's Laws Question 1 One could propose a genetic model to explain the inheritance of left- and right-handedness in humans. Let’s call the normal allele D and the recessive allele d. What are the genotypes of every person in this pedigree? In cats, long hair is recessive to short hair. 0000012952 00000 n 0000031037 00000 n Try to work on the problems in small groups. You are encouraged to work through the problems first before you look up the answers. 0000014515 00000 n All tailless offspring from this cross when mated with wildtype produce a 1: 1 ratio of tailless to wildtype. See if you can answer the questions using probabilities rather than constructing Punnett squares. In the pedigree below, the female (dark circle) in the pedigree is affected with phenylketonuria. Donate Login Sign up. However, you should seek help if you find you cannot answer a problem. T=tall, t=dwarf F1: all tall (Tt) b. Most of these problems are fairly simple, yet mastering their solutions will provide the An Introduction to Mendelian Genetics. When a particular purple-flowered jimsonweed is self-fertilized, the progeny are 27 purple-flowered and 10-white flowered progeny. Indeed, if the blending theory were true, then everyone would eventually look about the same. Now, if only 2-3 offspring were born and they … Simple Genetics Practice Problems KEY This worksheet will take about 20 minutes for most students, I usually give it to them after a short lecture on solving genetics problems. The litter which results MENDELIAN GENETICS PROBLEMS AND ANSWERS PROBLEM 1. In the pedigree below, the shaded symbols represent people affected with a neurological disorder caused by an X-linked recessive allele. Try to work on the problems in small groups. The genes are on different chromosomes. A couple with normal color vision has a daughter with normal vision and a son who is color-blind… What genetic mechanism can explain the results of these crosses? Be sure to complete the Punnett square to show how you derived your solution. 0000004506 00000 n % & c d e Š ” Ó Ô Û Ü ø ú ü ş Û ã ü 6 > B K O T o w z  € ‚ ƒ „ ‡ � § ± ³ » ¼ ½ ¾ € ‡ ‰ � – £ ° µ ¸ ¾ Ä Ê Ì Ñ Ò İ â å ë ñ ÷ ù ÿ N O { | ª « Ù Ú ü÷ü÷üïêü÷üêüêü÷ü÷ü÷ü÷ü÷ü÷ü÷ü÷ü÷ü÷ü÷ü÷ü÷ü÷ü÷ü÷ü÷ü÷êü÷ü÷üâü÷ü÷ü÷ü÷Ûü÷ü÷ü÷ü÷üÓüêüêüêüê jo h¤s Uh¤s h¤s h¤s h¤s 6� h¤s �j h¤s U h¤s 6�h¤s S * 5 î ï b c b c e f Ç È 2. è One of the parent cats is long-haired (recessive allele). Which mechanism do you think is the most likely? a. PP ss x pp SS d. Pp Ss x Pp ss b. Pp SS x pp ss e. Pp Ss x Pp Ss c. Pp Ss x Pp SS f. Pp Ss x pp ss For the following pedigree, which of the following mechanisms can explain the pattern of inheritance of the trait shown in the affected individuals (the dark symbols).

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