EBK BIOLOGY
11th Edition
ISBN: 8220102797352
Author: Raven
Publisher: YUZU
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Textbook Question
Chapter 23, Problem 2U
a. is based on overall similarity of
b. requires distinguishing similarity due to inheritance from a common ancestor from other reasons for similarity.
c. is not affected by homoplasy.
d. None of the choices is correct.
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Locus heterogeneity refers to a genetic disorder thata. has a heterogeneous phenotype.b. is caused by mutations in two or more different genes.c. involves a structural change in multiple chromosomes.d. is inherited from both parents.
Locus heterogeneity means that a genetic disordera. has a heterogeneous phenotype.b. is caused by mutations in two or more different genes.c. involves a structural change in multiple chromosomes.d. is inherited from both parents
What can you assert regarding cytoplasmic inherited traits?
A.
extensive phenotypic variation exhibited, even within a single family
B.
reciprocal crosses that give different results
C.
All of the answers are correct.
D.
usually inherited from one parent, typically the maternal parent
E.
present in both males and females
Chapter 23 Solutions
EBK BIOLOGY
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- Which of the following statements best describe the equation P = G + E + (G X E)?* a. The phenotype is the sum of the genotype and the environment. b. The phenotype of an organism is determined by its genetic traits. c. The phenotype is the total characteristics displayed by an organism that results from the expression of the genes as well as the influence of environmental factors. d. The phenotype is the observable and measurable characteristics of an organism as a result of the interaction of the genes of the organism, environmental factors, and random variation.arrow_forwardWhich of the following statements is true?a. Not all inheritance patterns follow a strict dominant/recessive relationship.b. Geneticists want to understand both inheritance patterns and theunderlying molecular mechanisms that cause them to happen.c. Different inheritance patterns are explained by a variety ofdifferent molecular mechanisms.d. All of the above are true.arrow_forwardWhich of the following statements accurately represents the difference between a gene and a locus? a. A gene is dominant, and a locus is recessive. b. A locus and a gene are essentially the same - there is no difference. c. A locus occurs in diploid cells, and a gene occurs in a haploid cell. d. A locus is a phenotype and a gene is a genotype.arrow_forward
- is a segment of DNA whose sequence of nucleotides codes for a 7. A protein. a. gene b. chromosome c. karyotype d. characteristic 8. A Is a graphic display of chromosomes, arranged by size and shape. a. genotype b. phenotype C. monotype d. karyotype 9. In purple people eaters, one-horn is dominant and no horns is recessive. Draw a Punnett Square showing the cross of a purple people eater that is heterozygous for horns with a purple people eater that does not have horns. Summarize the genotypes & phenotypes of the possible offspring. 10. Blood typing: a. The father of a child has type AB blood. The mother has type A. Which blood types can their children NOT have? b. A woman with type A blood and a man with type B blood could potentially have offspring with what blood types? c. The mother has type A blood. Her husband has type B blood. Their child has type O blood. The father claims the child can't be his. Is he right?arrow_forwardWhich of the following is false? a. The color of a fruit fly's eyes is a trait. b. The instructions for producing a trait are found in a gene that controls the physical expression of that trait. c. A gene can have different alleles that can specify different traits, such as red or brown eye color. d. The trait is influenced by the gene, independent of the environment. e. By studying the patterns of traits over generations of an organism, the genetic composition of an organism can be deduced.arrow_forwardFor each of the following genetic topics, indicate whether it focuses on transmission genetics, molecular genetics, or population genetics. a. Analysis of pedigrees to determine the probability of someone inheriting a traitb. Study of people on a small island to determine why a genetic form of asthma is prevalent on the islandc. Effect of nonrandom mating on the distribution of genotypes among a group of animals d. Examination of the nucleotide sequences found at the ends of chromosomese. Mechanisms that ensure a high degree of accuracy in DNA replicationf. Study of how the inheritance of traits encoded by genes on sex chromosomes (sex-linked traits) differs from the inheritance of traits encoded by genes on nonsex chromosomes (autosomal traits)arrow_forward
- STRUCTURES AND FUNCTIONS Write the possible genotypes of the offspring in the Punnett square below. Then answer the questions in the spaces provided. Q = green q = yellow T = smooth t = wrinkled a. Does the Puninett square represent a monohybrid cross or a dihybrid cross? How do you know? b. List the phenotype.of the parents. C. Give the phenotypic ratio predicted by the Punnett square for the cross.arrow_forwardA responsible for anterior morphology in an organism is inherited as maternal effect has two allele: H (normal) and h (a recessive allele that cause small head). A female organism with normal head mates with a true-breeding male with small head. All the offspring have small heads. What should be the genotype of mother and offspring? gene. It a. Mother- Hh, and Offspring- hh b. Mother- hh and offspring Hh c. Mother-hh and offspring- hh d. Mother- hh and offspring- Hharrow_forwardA test cross is used to determinea. the genotype of an organism with a phenotypically dominant trait.b. the genotype of an organism with a phenotypically recessive trait. c. the genotype of an organism showing pleiotropic effects of a gene.d. if a trait is inherited polygenically.arrow_forward
- What is a quantitative trait locus (QTL)? a. A portion of the genome that is a particular quantitative length b. A portion of the genome in which polymorphic markers correlate with a phenotype c. A region of the genome where qualitative traits associate with discrete phenotypes d. A region of the genome that does not follow Mendelian inheritance patternsarrow_forwardWhich of the following does not describe a gene? A. A gene is the observable characteristics or traits B. All are correct C. Agene is a stretch of DNA that produces one or more genetic traits D. A gene is the basic unit of genetic information for a specific traitarrow_forwardDescribe five different scenarios where a change in DNA sequence would result in a phenotypic change at the organismal (human) level.arrow_forward
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