Biology and Genetics

1. In Mendel’s peas, round peas are dominant to wrinkled peas. By crossing a het

1. In Mendel’s peas, round peas are dominant to wrinkled peas. By crossing a heterozygous round plant (Rr) to a wrinkled plant(rr), 80 offspring resulted. a. How many would you ex…

1. In November, a massive quantity of (1011 g) of the noxious fumigant \"Elexsio

1. In November, a massive quantity of (1011 g) of the noxious fumigant "Elexsion" (CBr2CIF) is released into the atmosphere. The compound has a half life of 2.5 years in the lower…

1. In October of 2003, a raging wildfire swept through the mountain ecosystems i

1. In October of 2003, a raging wildfire swept through the mountain ecosystems in Southern California, burning everything in its path to the ground and driving away all of the ani…

1. In Paget disease, _____________ ________________ denotes abnormal bone format

1. In Paget disease, _____________    ________________ denotes abnormal bone formation in soft tissue that occurs after localized muscle injury 2. Primary bone cancer is rare, but…

1. In Part 1A of the experiment, your first mixture (Mixture I) will be made fro

1. In Part 1A of the experiment, your first mixture (Mixture I) will be made from the following reactants, with water as the solvent: 0.0 mL 4.0 M acetone10.0 mL 1.0 M HCI 10.0 mL…

1. In _____________ selection, individuals with both extreme forms of a trait ar

1. In _____________ selection, individuals with both extreme forms of a trait are at a selective advantage. 2. The spotted touch-me-not, a flowering plant, has seed pods that burs…

1. In a DNA double helix, _____________________. (a) the two DNA strands are ide

1. In a DNA double helix, _____________________. (a) the two DNA strands are identical. (b) purines pair with purines. (c) thymine pairs with cytosine. (d) the two DNA strands run…

1. In a \"silent\" mutation A) The codon that mutates does not cause a change in

1. In a "silent" mutation A) The codon that mutates does not cause a change in the amino acid specified B) The codon that mutates causes change in the amino acid specified C) The …

1. In a bell curve of a population, what types of individuals occur at the two e

1. In a bell curve of a population, what types of individuals occur at the two ends of the curve? 2. What are the 3 principal methods by which variations in genotype occur in a po…

1. In a calorimetric protein assay, 40 uL of a 0.40 mg/ml solution were mixed wi

1. In a calorimetric protein assay, 40 uL of a 0.40 mg/ml solution were mixed with 360 uL of water and 1.60 ml assay reagent. 1.00 ml was placeed in a cuvet. The abosrbance of 0.3…

1. In a conventional light microscope, which of the following paths does light t

1. In a conventional light microscope, which of the following paths does light take after leaving the light source and before being perceived in the eye? a.)condenser lens specime…

1. In a conventional light microscope, which of the following paths does light t

1. In a conventional light microscope, which of the following paths does light take after leaving the light source and before reaching the observer’s eye? A. condenser lens -> …

1. In a freshwater pond there exists a population of amphipods (aquatic crustace

1. In a freshwater pond there exists a population of amphipods (aquatic crustaceans). The pond is then stocked with Sunfish, a fish that feeds on amphipods. Sunfish are visual pre…

1. In a heterozygote, a allele can completely mask or hide a allele 2. When the

1. In a heterozygote, a allele can completely mask or hide a allele 2. When the effect of one gene's expression completely masks the effect of another, the genetic phenomenon is c…

1. In a hypothetical population of 1000 frogs there exists a gene, D, with two a

1. In a hypothetical population of 1000 frogs there exists a gene, D, with two alleles (D and d). 280 of the frogs are homozygous dominant (DD), and 220 are homozygous recessive (…

1. In a molecule of DNA,the nitrogen-base A always pairs with_ e of DNA, the nit

1. In a molecule of DNA,the nitrogen-base A always pairs with_ e of DNA, the nitrogen-base A always pairs with and G always pairs ith 2. In the cell, transcription takes place in …

1. In a person with myopia (nearsightedness), light from a distant object is bro

1. In a person with myopia (nearsightedness), light from a distant object is brought to a focal point.? A) on the retina B) in front of the retina C) behind the retina 2. The thre…

1. In a person with type 2 diabetes, which of the followingfoods would ordinaril

1. In a person with type 2 diabetes, which of the followingfoods would ordinarily promote the LEAST favorable glycemiceffect? A. chocolate B. ice cream C. baked potato D. baked be…

1. In a plant phospho-relay system, which are thought to be derived from bacteri

1. In a plant phospho-relay system, which are thought to be derived from bacterial signaling cascades, the receptor is part of the ubiquitination process (E3 ligase) targeting a r…

1. In a plant, we note the following traits: Blue (Sl) flower is dominant over s

1. In a plant, we note the following traits: Blue (Sl) flower is dominant over slate (sl) flower Green stigma (R) is dominant over red (r) stigma Short style (Lg) is dominant over…

1. In a population of 2000 Gaboon vipers (Bitis gabonica), a genetic difference

1. In a population of 2000 Gaboon vipers (Bitis gabonica), a genetic difference with respect to venom exists at a single locus that controls venom production. The alleles are inco…

1. In a population of Lesser Snozzlewhompins, horn length is controlled by a sin

1. In a population of Lesser Snozzlewhompins, horn length is controlled by a single locus H, with the genotypes HH, Hh and hh representing long, medium and short horn length, resp…

1. In a population of cattle the following color distribution was noted: 36% red

1. In a population of cattle the following color distribution was noted: 36% red (RR), 48% roan (Rr), and 16% white (rr). Is this population in Hardy-Weingberg equilibrium? A. No,…

1. In a population of people off the coast of New Quinoa, a recessive allele for

1. In a population of people off the coast of New Quinoa, a recessive allele for albinism is quite frequent. One in 100 people of the population are albino and homozygous recessiv…

1. In a recent seminar, Dr. Anna Salazar presented on a set of experiments in wh

1. In a recent seminar, Dr. Anna Salazar presented on a set of experiments in which she fed flies food with blue food coloring. Healthy flies looked normal, while unhealthy flies …

1. In a sample of 500 tiger lilies, three genotypes occurred in the following nu

1. In a sample of 500 tiger lilies, three genotypes occurred in the following numbers. Calculate the genotypic and allele frequencies. (4 points) Genotype     AA      Aa     aa Nu…

1. In a series of crosses with peas that have round seeds and yellow cotyledons

1. In a series of crosses with peas that have round seeds and yellow cotyledons with pea plants that that have wrinkled seeds and green cotyledons, the following was seen:      Pa…

1. In a species of desert rodent coat color is affected by the T locus. TT indiv

1. In a species of desert rodent coat color is affected by the T locus. TT individuals have black coat, Tt are brown, and tt are tan. You sample 500 individuals from a desert popu…

1. In a species of flower, pink flower color results from an incomplete dominanc

1. In a species of flower, pink flower color results from an incomplete dominance of red over white flower color. What would be the expected F phenotypes in a cross between a whit…

1. In a strain of Drosophila, purple eyes are dominant to yellow eyes and eye co

1. In a strain of Drosophila, purple eyes are dominant to yellow eyes and eye color is X-linked. What insects could you cross to ensure 100% purple eyed progeny? A. yellow eyed fe…

1. In a strain of pigs that is true-breeding at all loci affecting the thickness

1. In a strain of pigs that is true-breeding at all loci affecting the thickness of back fat, the variance in back fat thickness is 12mm2. What is the additive genetic variance an…

1. In a successful PCR reaction, which of the following is true? a. The template

1. In a successful PCR reaction, which of the following is true? a. The template DNA is added in excess of the primers and dNTPs. b. The annealing temperature must be just below t…

1. In a test cross for a tall (T) individual you should cross it with which geno

1. In a test cross for a tall (T) individual you should cross it with which genotype(s). a) TT b) Tt c) tt d) Either TT or tt 2. In many species of flowering plants, the gene(s) r…

1. In a test cross, peas of an unknown genotype are crossed with peas of a known

1. In a test cross, peas of an unknown genotype are crossed with peas of a known genotype. In this example, smooth peas are the unknown and wrinkled peas are the known (rr). If ha…

1. In a theoretical laboratory, students are studying the protein synthesis path

1.     In a theoretical laboratory, students are studying the protein synthesis pathway: DNAmRNAprotein. During observation at several work stations, they record some discrepancie…

1. In a three-point cross, why does the sum of the two short lengths not add up

1. In a three-point cross, why does the sum of the two short lengths not add up to the long one (that is, for the map a-b-c, why do the recombination freguencies a-b plus b-c not …

1. In a type of parakeet known as a “budgie”, feather color is controlled by two

1. In a type of parakeet known as a “budgie”, feather color is controlled by two genes. A yellow pigment is synthesized under control of a dominant allele Y. Recessive homozygotes…

1. In addition to human error, list as many different parameters that can vary f

1. In addition to human error, list as many different parameters that can vary from on infection to the next that may influence a typical titer procedure. 2. Name at least three f…

1. In allosteric enzyme inhibition, the active site is blocked by another molecu

1. In allosteric enzyme inhibition, the active site is blocked by another molecule a. True b. False 2. In the second-messenger system of hormonal action, a. The presence of a smal…

1. In allosteric enzyme inhibition, the active site is blocked by another molecu

1. In allosteric enzyme inhibition, the active site is blocked by another molecule a. True b. False 2. In the second-messenger system of hormonal action, a. The presence of a smal…

1. In allosteric enzyme inhibition, the active site is blocked by another molecu

1. In allosteric enzyme inhibition, the active site is blocked by another molecule a. True b. False 2. In the second-messenger system of hormonal action, a. The presence of a smal…

1. In an experiment where you were trying to determine which shower head (the pa

1. In an experiment where you were trying to determine which shower head (the part of the shower from which the water comes) saved the most water, variance in the amount of water …

1. In animals, most microRNAs come from__________ transcription in the nucleus t

1. In animals, most microRNAs come from__________ transcription in the nucleus the extracellular environment viral infections RNA synthesis occurring in the RNA induced silencing …

1. In bacteria, the his operon is a repressible operon that encodes enzymes resp

1. In bacteria, the his operon is a repressible operon that encodes enzymes responsible for the production of the amino acid histidine. The co-repressor for the regulation of this…

1. In both oxygenic photosynthesis and anoxygenic photosynthesis, a. CO2 is the

1. In both oxygenic photosynthesis and anoxygenic photosynthesis, a. CO2 is the source of carbon for the synthesis of carbohydrates. b. 02 is a product. c. H2S is converted to sul…

1. In broad, general terms understand that all three of the above increase the c

1. In broad, general terms understand that all three of the above increase the complexity of genetic and phenotypic variability in populations. 2. Haplotype, How is this different…

1. In cats, black color is caused by a sex-linked (X-linked) allele; alternative

1. In cats, black color is caused by a sex-linked (X-linked) allele; alternative allele at this locus vauses orange color. The heterozygote is tortoiswshell. What kind of foffspri…

1. In cats, the B gene controls the production of hair pigment. The B allele, wh

1. In cats, the B gene controls the production of hair pigment. The B allele, which is dominant, specifies black fur. The recessive b allele produces brown fur. (a) (0.5 point) If…

1. In cats, the sex-linked gene B determines black when homozygous, yellow when

1. In cats, the sex-linked gene B determines black when homozygous, yellow when homozygous recessive, and calico when heterozygous. a) Determine the genotype of the following cats…

1. In cattle, the hornless condition (H) is dominant to that for the possession

1. In cattle, the hornless condition (H) is dominant to that for the possession of horns (h). a) A horned bull is mated to a hornless cow, which is heterozygous. What kind of offs…