Part B 1. For the remaining characteristics, you will be looking at homozygous and heterozygous traits. Each trait will be determined to be homozygous recessive, homozygous dominant, or hetero- zygous. Letters representing the alleles will be given to you; the uppercase letter is always dominant and the lowercase letter is always recessive. If both dice rolled are even numbers, it indicates homozygous dominant alleles; if both are odd, it indicates homozygous recessive alleles; if one is odd and the other even, it indicates heterozygous alleles.

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Part B
1.
For the remaining characteristics, you will be looking at homozygous and heterozygous traits.
Each trait will be determined to be homozygous recessive, homozygous dominant, or hetero-
zygous. Letters representing the alleles will be given to you; the uppercase letter is always
dominant and the lowercase letter is always recessive. If both dice rolled are even numbers,
it indicates homozygous dominant alleles; if both are odd, it indicates homozygous recessive
alleles; if one is odd and the other even, it indicates heterozygous alleles.
2. Eyebrows: Use the alleles "A" and "a" for this trait. Two separate brows are the
dominant trait, whereas the unibrow (or one continuous brow) is recessive.
3.
Eye shape: Use the alleles "R" and "r" for this trait. Round eyes are the dominant
trait; almond shaped eyes are recessive.
4.
Hitchhiker's thumb: Use the alleles "H" and "h" for this trait. Straight thumbs are
dominant; Hitchhiker's thumbs (the curving upward of the thumb) are recessive.
5.
Earlobes: Use the alleles "D" and "d" for this trait. Detached or free earlobes are
dominant; attached earlobes are recessive.
6. Tongue Rolling: Use the alleles "E" and "e" for this trait. The ability to roll the
tongue is dominant; the inability to roll the tongue is recessive.
7.
Widow's peak: Use the alleles "F" and "f " for this trait. Widow's peaks are
dominant; straight hairlines are recessive.
Transcribed Image Text:Part B 1. For the remaining characteristics, you will be looking at homozygous and heterozygous traits. Each trait will be determined to be homozygous recessive, homozygous dominant, or hetero- zygous. Letters representing the alleles will be given to you; the uppercase letter is always dominant and the lowercase letter is always recessive. If both dice rolled are even numbers, it indicates homozygous dominant alleles; if both are odd, it indicates homozygous recessive alleles; if one is odd and the other even, it indicates heterozygous alleles. 2. Eyebrows: Use the alleles "A" and "a" for this trait. Two separate brows are the dominant trait, whereas the unibrow (or one continuous brow) is recessive. 3. Eye shape: Use the alleles "R" and "r" for this trait. Round eyes are the dominant trait; almond shaped eyes are recessive. 4. Hitchhiker's thumb: Use the alleles "H" and "h" for this trait. Straight thumbs are dominant; Hitchhiker's thumbs (the curving upward of the thumb) are recessive. 5. Earlobes: Use the alleles "D" and "d" for this trait. Detached or free earlobes are dominant; attached earlobes are recessive. 6. Tongue Rolling: Use the alleles "E" and "e" for this trait. The ability to roll the tongue is dominant; the inability to roll the tongue is recessive. 7. Widow's peak: Use the alleles "F" and "f " for this trait. Widow's peaks are dominant; straight hairlines are recessive.
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