Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 17, Problem 4SQ
Summary Introduction
Introduction: Sexual selection is a process of selecting mates by an individual. The selection will be according to the physical traits that usually attract the opposite gender. Increased size, coloration, and adornment appearance of the individual help in selecting a mate. Many factors influence the selection of a partner to mate. They include sexual dimorphism, exaggerated traits and male aggression, and so on.
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Students have asked these similar questions
If a person has one gene influencing blue eyes but actually has brown eyes, blue eyes must be a __________ trait. a. dominant b. recessive c. sex-linked d. polygenic
A recessive sex-linked gene in humans leads to a loss of sweat glands. A woman heterozygous for this will
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If you received two alleles for a gene and they were different, which of the following best describes your situation?
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Chapter 17 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 17 - ___ is the original source of new alleles. a....Ch. 17 - Which is required for evolution to occur in a...Ch. 17 - Prob. 3SQCh. 17 - Prob. 4SQCh. 17 - The persistence of sickle-cell anemia in a...Ch. 17 - ___ tends to keep populations of a species similar...Ch. 17 - The theory of natural selection does not explain...Ch. 17 - Prob. 1DAACh. 17 - Prob. 2DAACh. 17 - Prob. 3DAA
Ch. 17 - Prob. 4DAACh. 17 - Which of the following is not part of how we...Ch. 17 - Sex in many birds is typically preceded by an...Ch. 17 - The difference between sympatric and parapatric...Ch. 17 - A fire devastates all trees in a wide swath of...Ch. 17 - Match the evolution concepts. ____ gene flow a....Ch. 17 - Change in allele frequency of a population is...Ch. 17 - Species have traditionally been characterized as...Ch. 17 - Rama the cama, a llama-camel hybrid, was born in...Ch. 17 - Two species or antelope, one from Africa, the...Ch. 17 - Prob. 4CT
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- Carriers of human sex-linked disorders are ________. a. all children b. female children only c. male children onlyarrow_forwardA recessive trait will be observed in individuals that are ________ for that trait. a. heterozygous b. homozygous or heterozygous c. homozygous d. diploidarrow_forwardA r e c e s s i v e trait will be observed in individuals that are ________ for that trait. a. heterozygous b. homozygous c. carriersarrow_forward
- An example of a trait that results from a single dominant allele is _____. A.attached earlobes B.cystic fibrosis C.more frequent in its appearance D.polydactylyarrow_forwardBaldness is a phenomenon where individuals lose hair as they grow older. As an X-linked recessive gene, what instances do females manifest this trait? a. heterozygous recessive b. heterozygous dominant c. homozygous recessive d. homozygous dominantarrow_forwardIf an individual manifests a physical trait that is considered recessive this means that their genotype must be ____________________ for that trait. A. Homozygous Dominant B. Homozygous Recessive C. Heterozygous D. None of the above.arrow_forward
- A disorder that only ever appears in males and is present in all male children is a(n) ________. a. Y-linked disorder b. autosomal dominant disorder c. X-linked dominant disorderarrow_forwardIn humans, unattached earlobes (E) are dominant to attached earlobes (e). If a child is born with unattached earlobes, and a mother with attached earlobes, and a dad with unattached earlobes, what is genotype of the dad? O a. EE or Ee O b. ee O c. Ee O d. Ee or ee O e. EEarrow_forwardWhich of these situations offers the lowest “opportunity for selection” for males? A. Females choose mates with a fancy ornament. B. Every female chooses one male to mate with for life. C. Locations that females need access to in order to reproduce are rare. D. Males fight each other for access to groups of females.arrow_forward
- Xiaoli is 23 years old female swimmer. She tested negative for the bar body test and positive for SRY gene. Her blood testosterone level was 25 nmol/L. However, she has a typical external female reproductive anatomy and secondary sex characteristics. what genetic variation the best characterize Xiali is. A. 46, XX with SRY gene B. 46, XY with deleted SRY gene C. 46, XX with excess testosterone from the adrenal glands D. 45, X (only one X chromosome present) E. 46, XY with androgen insensitivityarrow_forwardAn individual is true breeding for a character if they are _____. A. Heterozygous B. Homozygous dominant C. Homologous D. Homozygous recessivearrow_forwardThe sacrifice of the life of an individual so that the genes of relatives may be passed on is called ________. a. operant learning b. kin selection c. kinesis d. imprintingarrow_forward
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