Question

*biological anthropology*

EXERCISE 5 MENDELIAN TRAITS IN HUMANS 1 While most be e most human traits are polygenic, the traits in the chart below have traditionally been considered Mendelion traits. More recent research has disputed the single gone nature of some of these traits, but for the purpose of this exercise, assume that the following traits are Mendelian Work with a partner to help each other determine your own phenotypes and possible genotypes for these traits write your answers in the chart. (Note: Refer to the table on p 62 for information about these traite Mendelian Trait Your Phenotype Your Possible Genotype(s) Cleft Chin (Dominant) 1 phases in Freckles (Dominant) Attached Earlobes (Recessive) Hitchhiker's Thumb (Recessive) Widow's Peak (Dominant)

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Answer 1

Mendelian trait	Your phenotype	Your possible genotypes
Cleft chin(dominant)	Have Cleft chin (dominant)	CC or Cc
	No cleft chin (recessive)	cc
Freckles (dominant)	Have freckles (dominant)	FF or Ff
	No freckles (recessive)	ff
Attached earlobes (recessive)	Free (dominant)	EE or Ee
	Attached (recessive)	ee
Hitchhiker's Thumb (recessive)	Don't have hitchhiker's thumb (dominant)	HH or Hh
	Have hitchhiker's thumb (recessive)	hh
Widow's peak (dominant)	Have widow's peak (dominant)	WW or Ww
	No widow's peak (recessive)	ww

I have provided the possible phenotypes and their genotypes. You can write according to your phenotypes. For example, if you have cleft chin, which is a dominant character, then your genotype will be CC or Cc ; and if you don't have cleft chin, which is a recessive character, then your genotype will be cc. Similarly, you can write other traits.

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