Q: Review the Hardy-Weinberg equilibrium equation. What parts of the
Review the Hardy-Weinberg equilibrium equation. What parts of the equation represent gene frequencies? What elements represent genotype frequencies and phenotype frequencies? Are genotype and phenotyp...
See AnswerQ: As we have seen, the extent to which phenotypic variation in
As we have seen, the extent to which phenotypic variation in a trait is determined by genetic variation affects its potential to evolve by natural selection. In other words, the potential for a trait...
See AnswerQ: As described in Figure 7.10, host DNA is hydrolyzed
As described in Figure 7.10, host DNA is hydrolyzed into small pieces, which are occasionally assembled with phage proteins, creating a phage with bacterial chromosomal DNA. If the breakage of the chr...
See AnswerQ: An individual has the genotype Aa Bb Cc and makes an abnormal
An individual has the genotype Aa Bb Cc and makes an abnormal gamete with the genotype AaBc. Does this gamete violate the law of independent assortment or the law of segregation (or both)? Explain you...
See AnswerQ: On rare occasions, an organism may have three copies of a
On rare occasions, an organism may have three copies of a chromosome and therefore has three copies of the genes on that chromosome (instead of the usual number of two copies). For such a rare organis...
See AnswerQ: Describe the difference between genotype and phenotype. Give three examples.
Describe the difference between genotype and phenotype. Give three examples. Is it possible for two individuals to have the same phenotype but different genotypes?
See AnswerQ: Do you know the genotype of an individual with a recessive trait
Do you know the genotype of an individual with a recessive trait and/or a dominant trait? Explain your answer.
See AnswerQ: For Mendelian inheritance, the nuclear genotype (i.e.,
For Mendelian inheritance, the nuclear genotype (i.e., the alleles found on chromosomes in the cell nucleus) directly influences an offspring’s traits. In contrast, for non-Mendelian inheritance patte...
See AnswerQ: Suppose a maternal effect gene exists as a functional dominant allele and
Suppose a maternal effect gene exists as a functional dominant allele and a nonfunctional recessive allele. A mother who is phenotypically abnormal produces all normal offspring. Explain the genotype...
See AnswerQ: In humans, a rare dominant disorder known as nail-patella
In humans, a rare dominant disorder known as nail-patella syndrome causes abnormalities in the fingernails, toenails, and kneecaps. Researchers have examined family pedigrees with regard to this disor...
See AnswerQ: In a P1 transduction experiment, the P1 lysate contains phages that
In a P1 transduction experiment, the P1 lysate contains phages that carry pieces of the host chromosomal DNA, but the lysate also contains broken pieces of chromosomal DNA (see Figure 7.10). If a P1 l...
See AnswerQ: Let’s suppose that you have made a karyotype of a female fruit
Letâs suppose that you have made a karyotype of a female fruit fly with red eyes and found that it has three X chromosomes instead of the normal two. Although you do not know its par...
See AnswerQ: You have a female snail that coils to the right, but
You have a female snail that coils to the right, but you do not know its genotype. You may assume that right coiling (D) is dominant to left coiling (d). You also have male snails of known genotype. H...
See AnswerQ: On a camping trip, you find one male snail on a
On a camping trip, you find one male snail on a deserted island that coils to the right. However, in this same area, you find several shells (not containing living snails) that coil to the left. There...
See AnswerQ: In a donor population, the allele frequencies for the common (
In a donor population, the allele frequencies for the common (HbA ) and sickle cell (HbS ) alleles are 0.9 and 0.1, respectively. A group of 550 individuals from this population migrates to another po...
See AnswerQ: Does inbreeding affect allele frequencies? Why or why not? How
Does inbreeding affect allele frequencies? Why or why not? How does it affect genotype frequencies? With regard to rare recessive diseases, what are the consequences of inbreeding in human populations...
See AnswerQ: Cystic fibrosis (CF) is a recessive autosomal disorder. In
Cystic fibrosis (CF) is a recessive autosomal disorder. In certain populations of Northern European descent, the number of people born with this disorder is about 1 in 2500. Assuming HardyWeinberg equ...
See AnswerQ: In a population, the frequencies of two alleles are B =
In a population, the frequencies of two alleles are B = 0.67 and b = 0.33. The genotype frequencies are BB = 0.50, Bb = 0.37, and bb = 0.13. Do these numbers suggest inbreeding? Explain why or why not...
See AnswerQ: What is the advantage of genetic recombination, which is depicted in
What is the advantage of genetic recombination, which is depicted in part (b)? From Figure 20.1:
See AnswerQ: An experimental assay for the blood-clotting protein called factor IX
An experimental assay for the blood-clotting protein called factor IX is available. A blood sample was obtained from each individual in the following pedigree. The amount of factor IX protein, shown w...
See AnswerQ: Cells lining the epididymis secrete a glycoprotein (beta-defensin)
Cells lining the epididymis secrete a glycoprotein (beta-defensin) that coats sperm and facilitates their passage through cervical mucus. There are two common alleles for human beta-defensin: a wild-t...
See AnswerQ: Cells lining the epididymis secrete a glycoprotein (beta-defensin)
Cells lining the epididymis secrete a glycoprotein (beta-defensin) that coats sperm and facilitates their passage through cervical mucus. There are two common alleles for human beta-defensin: a wild-t...
See AnswerQ: Cells lining the epididymis secrete a glycoprotein (beta-defensin)
Cells lining the epididymis secrete a glycoprotein (beta-defensin) that coats sperm and facilitates their passage through cervical mucus. There are two common alleles for human beta-defensin: a wild-t...
See AnswerQ: Cells lining the epididymis secrete a glycoprotein (beta-defensin)
Cells lining the epididymis secrete a glycoprotein (beta-defensin) that coats sperm and facilitates their passage through cervical mucus. There are two common alleles for human beta-defensin: a wild-t...
See AnswerQ: In the study of the effect of natural selection on a population
In the study of the effect of natural selection on a population, we encounter the differential equation dq/dt = -.0001q2 (1 - q), where q is the frequency of a gene a and the selection pressure is a...
See AnswerQ: 1. An immunological assay technique used to detect the presence of
1. An immunological assay technique used to detect the presence of minute quantities of drugs in blood and urine is ___________. 2. Antibodies designed to interact with a specific antigen site are (m...
See AnswerQ: What is a genotype and how do parents’ genotypes affect the blood
What is a genotype and how do parents’ genotypes affect the blood type of their offspring? In what area of the law does this information have important implications?
See AnswerQ: An individual’s father has a genotype of Tt at one locus.
An individual’s father has a genotype of Tt at one locus. The mother has a genotype of TT. What are the possible genotypes for their child? Identify the likelihood of inheriting each specific genotype...
See AnswerQ: What is true about monoclonal antibodies? A) They are
What is true about monoclonal antibodies? A) They are produced utilizing rapidly multiplying blood-cancer cells. B) They are produced by injecting a mouse with an antigen. C) They are expected to be...
See AnswerQ: A pink-flowering plant is of genotype RW. If two
A pink-flowering plant is of genotype RW. If two such plants are crossed, we obtain a red plant (RR) with probability .25, a pink plant (RW or WR) with probability .50, and a white plant (WW) with pro...
See AnswerQ: In a genetic study, a regular food was placed in each
In a genetic study, a regular food was placed in each of 20 vials and the number of flies of a particular genotype feeding on each vial recorded. The counts of flies were also recorded for another set...
See AnswerQ: A genetic experiment is undertaken to study the competition between two types
A genetic experiment is undertaken to study the competition between two types of female flies (Drosophila melanogaster) in cages with one male genotype acting as a substrate. The independent variable...
See AnswerQ: A gene is composed of two alleles, either dominant or recessive
A gene is composed of two alleles, either dominant or recessive. Suppose that a husband and wife, who are both carriers of the sickle-cell anemia allele but do not have the disease, decide to have a c...
See AnswerQ: In Problem 29, we learned that for some diseases, such
In Problem 29, we learned that for some diseases, such as sickle-cell anemia, an individual will get the disease only if he or she receives both recessive alleles. This is not always the case. For exa...
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