Biology and Genetics
101624 questions • Page 1631 / 2033
Two rock units are sitting one on top of the other. The lower rock unit is grani
Two rock units are sitting one on top of the other. The lower rock unit is granite. The upper rock unit is sandstone. The sandstone shows no signs of contact metamorphism. What ty…
Two roommates with little botanical knowledge thought they could make a quick pr
Two roommates with little botanical knowledge thought they could make a quick profit by growing ferns for the commercial florist market. They thought it would be very easy. All th…
Two scientists co-discover a population of single-celled eukaryotes that do not
Two scientists co-discover a population of single-celled eukaryotes that do not have mitochondria. Whoa! One scientist thinks the cells must be from a lineage that never underwent…
Two scientists disagree about the relative importance of diet in controlling cho
Two scientists disagree about the relative importance of diet in controlling cholesterol. Dr. Smith's experiments suggest that the amount of cholesterol in a person's blood is dir…
Two sea urchin species, Echinometra lucunterand E. viridis, live off the Atlanti
Two sea urchin species, Echinometra lucunterand E. viridis, live off the Atlantic coast of Panama in Central America. Another species of sea urchin, E. vanbrunti, lives off the Pa…
Two separate ponds were sampled for amphibian diversity Both ponds had the same
Two separate ponds were sampled for amphibian diversity Both ponds had the same number of specious was 1.3 for Pond 1 and 2.1 for Pond 2. What accounts for the difference in H' ? …
Two ships are traveling on a straight line in opposite direction, the first ship
Two ships are traveling on a straight line in opposite direction, the first ship is called MAX the other is a star destroyer. MAX computers detect the star destroyer and begins to…
Two siblings, Lillian and Natalie, have the same mother and father and look very
Two siblings, Lillian and Natalie, have the same mother and father and look very much alike, but are not twins. They are curious how much genetic information is shared between the…
Two siblings, ages 2 and 4, experience fever, rhinitis, and pharyngitis that res
Two siblings, ages 2 and 4, experience fever, rhinitis, and pharyngitis that result in laryngotracheobronchitis. Both have a harsh, bark-like cough and hoarseness. Which of the fo…
Two silver spheres, each of 10 cm radius, are lying on a table with their center
Two silver spheres, each of 10 cm radius, are lying on a table with their centers a half-meter apart. Each sphere contains an equal number of protons and electrons. If the magnitu…
Two small identical conducting balls start with different amounts of charge on t
Two small identical conducting balls start with different amounts of charge on them. Initially, when they are separated by 85.0 cm (this is the center-to-center distance), one bal…
Two small metallic spheres, each of mass 0.15 g are suspended as pendulums by li
Two small metallic spheres, each of mass 0.15 g are suspended as pendulums by light strings from a common point as shown. The spheres are given the same electric charge, and it is…
Two small spheres, each carrying a net positive charge, are separated by 0.400 m
Two small spheres, each carrying a net positive charge, are separated by 0.400 m. You have been asked to perform measurements that will allow you to determine the charge on each s…
Two solutions are separated by a permeable membrane (a membrane that lets water
Two solutions are separated by a permeable membrane (a membrane that lets water and anything else dissolved in the water). there is a lot of salt in the solution on one side of th…
Two species of Iguanas live in a lagoon. The first species is diploid however do
Two species of Iguanas live in a lagoon. The first species is diploid however does not undergo Meiosis since the children of these Iguanas come out of eggs delivered by every Igua…
Two species of cicada have always lived in the same overlapping area since they
Two species of cicada have always lived in the same overlapping area since they diverged from their common ancestor. One species emerges and mates every 5 years, and the other spe…
Two species of finches living on separate islands have beaks of the same size. O
Two species of finches living on separate islands have beaks of the same size. On one island where both species live together, beak sizes are different. This scenario is an exampl…
Two species of fish live in the Gulf of Mexico: Green grouper eat slippery slime
Two species of fish live in the Gulf of Mexico: Green grouper eat slippery slimefish (and no other prey). Grouper have a type I functional response and slippery slimefish compete …
Two species of fish live in the Gulf of Mexico: Green grouper eat slippery slime
Two species of fish live in the Gulf of Mexico: Green grouper eat slippery slimefish (and no other prey). Grouper have a type I functional response and slippery slimefish compete …
Two species of frogs live in the same pond. When they attempt to reproduce, the
Two species of frogs live in the same pond. When they attempt to reproduce, the zygotes form but do not develop. What type of isolating mechanism is preventing speciation? Select …
Two species of pine. Pinus radiata and Pinus muricota, live together California
Two species of pine. Pinus radiata and Pinus muricota, live together California and ARE capable of forming hybrids under laboratory condition. However, they do NOT interbreed in n…
Two species of plant are both limited by nitrogen. When grown in isolation, litt
Two species of plant are both limited by nitrogen. When grown in isolation, little blue stem reaches a carrying capacity of 100 stems/m2 (at which point, the nitrogen concentratio…
Two species of water mites, Arrenurus recumbens and Arrenurus peregrinus, differ
Two species of water mites, Arrenurus recumbens and Arrenurus peregrinus, differ in hosts. Hosts for A. recumbens are chironomid midges, which are usually poor fliers, whereas hos…
Two species, A and B, vary in the level of parental investment they place into i
Two species, A and B, vary in the level of parental investment they place into individual offspring. Species A has very high parental investment per offspring; in Species B the in…
Two stars have magnitudes of 4 and 9 respectively. How much brighter is the star
Two stars have magnitudes of 4 and 9 respectively. How much brighter is the star with magnitude 4 than the star with magnitude 9? If these two star were the same absolute magnitud…
Two states allow by statute, and a third \"tolerates\", physician assisted suici
Two states allow by statute, and a third "tolerates", physician assisted suicide. Careful criteria have been established in these states to prevent abuses and overreaching. No sta…
Two strains of Bacterium sweetans, A and B, use sucrose (table sugar) as a sole
Two strains of Bacterium sweetans, A and B, use sucrose (table sugar) as a sole carbon source. The first step in the process of sucrose utilization is the passage of sucrose throu…
Two strains of flour beetles, both of which are pure breeding for the phenotype
Two strains of flour beetles, both of which are pure breeding for the phenotype “weird egg”, were obtained by you from independent sources. In both cases the egg phenotype is dete…
Two strains of rats were selected for increased or decreased pigmentation on the
Two strains of rats were selected for increased or decreased pigmentation on the head and back. After 10 generations of selection, the highly inbred high pigmentation strain had a…
Two strains of true-breeding maize that both produce ears of corn with white ker
Two strains of true-breeding maize that both produce ears of corn with white kernels are crossed and found to produce F1 plants that make all ears of corn with red kernels. If the…
Two students are discussing the direction groundwater will flow if the water tab
Two students are discussing the direction groundwater will flow if the water table is not flat. Student 1: i think groundwater would flow so that the water table tries to flatten …
Two synapomorphies of the somitichordata are relected in its name. They are the
Two synapomorphies of the somitichordata are relected in its name. They are the presence of _________, and retention of larval characteristics such as ____________, neural tube, a…
Two tanks (E & F) containing an equal number of moles of an ideal gas are at equ
Two tanks (E & F) containing an equal number of moles of an ideal gas are at equal temperatures. The volume of tank F is greater than the volume of tank E. Is the average spee…
Two terrestrial ecosystems based on photosynthesis and and chemolithosynthesis (
Two terrestrial ecosystems based on photosynthesis and and chemolithosynthesis (hydrothermal vents) trap their energy from specific energy sources. Tidal squeezing has also been s…
Two traditions of scientific research informed the synthetic theory of evolution
Two traditions of scientific research informed the synthetic theory of evolution. What were they? A)natural consequences and genetics B)scala naturae and systema naturae C)natural…
Two tree species live and compete for space on the side of a sleep mountain in N
Two tree species live and compete for space on the side of a sleep mountain in Nepal. The Annapurna blue fir is found high on the mountain, just below the permanent snow line wher…
Two true breeding strains of peas, one with (T gene) vines and violet (V gene) f
Two true breeding strains of peas, one with (T gene) vines and violet (V gene) flowers and the other with dwalf (t) vines and white (v) flowers, were crossed. All the F1 were tall…
Two true breeding strains of peas, one with (T gene) vines and violet (V gene) f
Two true breeding strains of peas, one with (T gene) vines and violet (V gene) flowers and the other with dwalf (t) vines and white (v) flowers, were crossed. All the F1 were tall…
Two true-breeding lines of beans are crossed. One line is tall with green pods,
Two true-breeding lines of beans are crossed. One line is tall with green pods, the other line is short with yellow pods. The F1 are medium height with yellow pods and are allowed…
Two true-breeding pea plants were crossed. One parent is round, terminal, violet
Two true-breeding pea plants were crossed. One parent is round, terminal, violet, constricted, while the other expresses the respective contrasting phenotypes of wrinkled, axial, …
Two types are glycolipids present in the glycocalyx of animal cells are inositol
Two types are glycolipids present in the glycocalyx of animal cells are inositol; sphingomyelin sphingomyelin; cerebrosides cerebrosides; gangliosides gangliosides; Which of the f…
Two types of linkages between the terminal sialic acid residue and the penultima
Two types of linkages between the terminal sialic acid residue and the penultimate galactose residue are found in nature: alpha(2,3) linkages and alpha(2,6) linkages (Figure 11.3)…
Two unrelated species of plants were hybridized. Species A is described as 2n =
Two unrelated species of plants were hybridized. Species A is described as 2n = 16. Species B is described as 2n = 10. How many chromosomes are in the hybrid? _______ Fill in the …
Two unrelated women each suffer from a complex disease where family, twin and ad
Two unrelated women each suffer from a complex disease where family, twin and adoption data suggest that genetic susceptibility is important. The disease if twice as common in men…
Two varieties—X (susceptible) and Y (resistant)—of eggplant were used to charact
Two varieties—X (susceptible) and Y (resistant)—of eggplant were used to characterize the genetics of resistance to a necrotizing plant pathogen. Eight thousand plants from each v…
Two very faint and distant galaxies are detected on photographs but are too dist
Two very faint and distant galaxies are detected on photographs but are too distant to allow identification of spiral arms and other morphological features. Using a spectrograph, …
Two women have benign pituitary tumors. Andrea has lost weight and complains of
Two women have benign pituitary tumors. Andrea has lost weight and complains of being hot all the time; she presents as thin and nervous, with tachycardia and exophthalmos. Bethan…
Tylenol (acetaminophen) is a pain reliever and fever reducer. Children\'s Tyleno
Tylenol (acetaminophen) is a pain reliever and fever reducer. Children's Tylenol is typically administered as a suspension liquid of 160 mg/5 mL: in other words, there is 160 mg o…
Tylenol Case Study en people near Chicago, Illinois, died soon after taking Tyle
Tylenol Case Study en people near Chicago, Illinois, died soon after taking Tylenol. The symptoms that they experienced before dying were dizziness, confusion, headache, and short…
Type 1 Gaucher disease is a rare disorder resulting from not having enough gluco
Type 1 Gaucher disease is a rare disorder resulting from not having enough glucocerebrosidase, an important enzyme that breaks down a fatty chemical called glucocerebroside. It is…
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