1 00:00:00,170 --> 00:00:03,120 Trying to figure out how certain traits are inherited can 2 00:00:03,120 --> 00:00:06,170 be really difficult. Sometimes we have a trait like one 3 00:00:06,170 --> 00:00:08,620 of our parents or the other, and other times we 4 00:00:08,620 --> 00:00:11,910 may have a trait not like our parents at all. 5 00:00:11,910 --> 00:00:16,170 Take these three examples of families with different traits. For 6 00:00:16,170 --> 00:00:19,140 example, look at height in the first scenario. We have 7 00:00:19,140 --> 00:00:21,900 two parents who are relatively short. Will have a son 8 00:00:21,900 --> 00:00:25,650 that's taller than both of them. Much taller, in fact. 9 00:00:25,650 --> 00:00:28,730 We have a family where the parents have a daughter 10 00:00:28,730 --> 00:00:31,370 and a little baby. And they all share the same 11 00:00:31,370 --> 00:00:34,950 skin color, roughly speaking. And in this third family, we 12 00:00:34,950 --> 00:00:38,220 have one parent who has a disposition of being happy 13 00:00:38,220 --> 00:00:40,620 all the time. And the other parent has a disposition 14 00:00:40,620 --> 00:00:43,540 of being sad all the time. Both the daughter and 15 00:00:43,540 --> 00:00:47,110 the son have a disposition of being happy. What I 16 00:00:47,110 --> 00:00:50,990 want you to tell me, is does the indicated trait appear 17 00:00:50,990 --> 00:00:54,730 related to one or both of the parents at all? For 18 00:00:54,730 --> 00:00:57,390 example, in the case of height, I want you to compare the 19 00:00:57,390 --> 00:01:00,820 son to the parents. And see if it appears that in some 20 00:01:00,820 --> 00:01:03,880 form or fashion whether it's a combination of the parents or one 21 00:01:03,880 --> 00:01:07,550 of the parents sharing this trait, does the son appear related with 22 00:01:07,550 --> 00:01:10,520 regards to this particular trait of height. And the same thing in 23 00:01:10,520 --> 00:01:13,370 the scenario with skin color and the same thing with the scenario 24 00:01:13,370 --> 00:01:16,210 we set up for disposition. Go ahead and tell me which answer 25 00:01:16,210 --> 00:01:17,800 you think is best for each case.