Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN: 9781305251052
Author: Michael Cummings
Publisher: Cengage Learning
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Chapter 7, Problem 14QP
Sex-Influenced and Sex-Limited Traits
What method of sex testing did the International Olympic Committee previously use? What method did it use subsequently? Does either of these methods conclusively test for “femaleness?” Explain.
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Students have asked these similar questions
Sex-influenced or sex-conditioned traits pertains to traits that are phenotypicany expressed depending on whether the individual is male or female.
Sex-limited traits these are characteristics only expressed in one sex.
1. Explain the difference between Sex-influenced and Sex limited traits.
Non-additive genetic factors make children less resemble their parents
true and false (with explain)
Table 7.1: Your genetic traits.
Your probable
genotype(s)
(use only the letter
combinations that apply)
Your phenotype
(list what you look like)
Traits
(alleles)
Almond
Straight thumbs
1. Eye shape (R, r)
2. Hitcher's Thumb (H, h)
3. Earlobes (D, d)
Free
4. Interlocking Fingers (I, i)
Left thumb over right
Widows Peak
5. Widow's Peak (F, f)
6. Face Shape (G, g)
Oval
7. Eye Color (B, b)
Brown
8. Chin Shape (J, j)
Round
Dimples
Brown
9. Dimples (A, a)
10. Hair Color (K, k)
Curly
11. Hair Texture (T, t)
12. PTC Taster (Q, q)
Chapter 7 Solutions
Human Heredity: Principles and Issues (MindTap Course List)
Ch. 7.6 - Prob. 1EGCh. 7.6 - Prob. 2EGCh. 7 - As outlined in this chapter, sex can be defined at...Ch. 7 - As outlined in this chapter, sex can be defined at...Ch. 7 - Prob. 1QPCh. 7 - The Human Reproductive System Discuss and compare...Ch. 7 - Prob. 3QPCh. 7 - A Survey of Human Development from Fertilization...Ch. 7 - Prob. 5QPCh. 7 - Prob. 6QP
Ch. 7 - Prob. 7QPCh. 7 - How Is Sex Determined? The absence of a Y...Ch. 7 - Prob. 9QPCh. 7 - Mutations Can Uncouple Chromosomal Sex from...Ch. 7 - Prob. 11QPCh. 7 - Mutations Can Uncouple chromosomal Sex from...Ch. 7 - Prob. 13QPCh. 7 - Sex-Influenced and Sex-Limited Traits What method...Ch. 7 - Prob. 15QPCh. 7 - Prob. 16QPCh. 7 - Equalizing the Expression of X Chromosome Genes in...Ch. 7 - Equalizing the Expression of X Chromosome Genes in...Ch. 7 - Equalizing the Expression of X Chromosome Genes in...
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- Which of the following statements is INCORRECT? Sex-limited traits affect a structure or process that is found in one sex but not in the other. Sex-influenced traits appear in both sexes. Expression of sex-influenced traits may differ between sexes because of hormonal differences. Pattern baldness is autosomal recessive in men, but autosomal dominant in women. Which of the following statements is NOT TRUE of complete androgen insensitivity syndrome (CAIS)? There is loss of function of the X-linked AR gene specifying the androgen receptor in males. Affected males cannot produce testosterone. Affected males have external genitalia that assume the default female state. Persons with CAIS are externally female but sterile because they lack the internal duct systems of either sex. Which of the following statements is INCORRECT? In human females, XX cells inactivate one of their two X chromosomes due to dosage compensation. About two weeks after fertilization, each cell…arrow_forwardHow does the strength of direct vs. indirect slection likely prevent males with bad genes from developing more attractive traits?arrow_forwardWidow's peak is dominant to straight hair line. What is the chance of producing a child with a straight hair line from parents that both have straight hair lines? 50% ( 2 out of 4) 25% ( 1 out of 4) 0% ( no chance) 75% ( 3 out of 4) 100% ( 4 out of 4)arrow_forward
- Using the data on the segregation of eye-color from Dosophila culture (see table 1). Tabulate your F1 and F2 data on eye-color as associated with sex by making a table. Based on your observations, frame your hypothesis as to the expected segregation of eye-color associated with sex. Apply the Chi-squared test to determine the goodness of fit of your data per generation. Ho: Ha: Decision Criteria: If X2c < X2tab, accept Ho. Otherwise, fail to accept Ho and accept Ha. Fill-up the next table. Conclusion:arrow_forwardMale-pattern baldness is an example of a sex-influenced trait. The baldness allele, which causes hair loss, is influenced by the hormones testosterone and dihydrotestosterone, but only when levels of the two hormones are high. In general, males have much higher levels of these hormones than females, so the baldness allele has a stronger effect in males than in females. (B-baldness; N-full or normal) hair) A normal man marries a normal woman. What can be the possible genotypes of the parents respectively? * a. BN x BN b. NN x BN c. NN x bb d. NN x BB e. BN x bb f. BB x BBarrow_forwardWhat chromosomes will result in a normal phenotype? (normal spongy pore trait)?Do all individuals who have the spongy tiny pore allele show it in their physical appearance? why or why not?And the table abovearrow_forward
- Please explain how do to this problemarrow_forwardType out the gametes that the mother and potential fathers can create select all daddy's that can potentially be the father of baby Y explin why some fathers are being considered and why other potential fathers have been eliminatedwhich of the potential fathers is the actual dad of baby Yarrow_forwardNormal healthy humans have (check ALL that apply): Group of answer choices about 24,500 different gene addresses 1 or 2 alleles at each address (depending on whether they're homozygous or heterozygous) 23 pairs of chromosomes in each somatic cell a system in which some genes are dominant over others a system in which dominant genes are always the best ones to havearrow_forward
- Twin studies are often used in the research of human behavioral traits. Although helpful, there are limitations to these studies. All of the following are limitations to twin studies EXCEPT: Traits are assumed to be simple Mendelian inheritance, discounting additive alleles and epistasis Dizygotic twins will often share more than 50% of their genes Monozygotic twins are often treated more similarity than dizygotic twins O Twins studies are a mechanism to understand the genetic and environmental components of a trait Twins reared apart are often adopted out to families of similar income, ethnicity, and religionarrow_forwardIdentify a possible advantage and a possible disadvantage of a genetic test that would identify genes in individuals that increase their probability of having Alzheimer’s disease later in life.arrow_forwardWidow's peak is dominant to straight hair line. What is the chance of producing a child with a straight hair line from parents that both are heterozygotes? 75% (3 out of 4) 50% (2 out of 4) 25% (1 out of 4) 0% (no chance) 100% (4 out of 4)arrow_forward
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