4. In cattle, polled (absence of horns) is dominant over horned and roan is the result of the heterozygous condition of the genes for red and white coat color. (Neither red nor white is dominant so in the heterozygote, both are expressed.) Assume both traits are on separate pairs of autosomes. What proportion of the offspring of a roan heterozygous polled bull and a roan horned cow would be expected to be roan and horned?
Q: statement is true. Both statements are false. 1. Epigenetics does not consider how exposure to…
A: Epigenetics is the study of how your behaviour and environment can influence how your genes…
Q: compare and contrast different approaches for assessing genome assemblies using assembly…
A: Genes are hereditary functional units that are made up of DNA (deoxyribonucleic acid). The genome is…
Q: Biotechnologies used in crop production have increased our food supplies, but this food abundance…
A: There are few important points about Biotechnologies used in crop production have increased our food…
Q: functional insulin requires the association of two polypeptides known as the A and B chains
A: Insulin's main function during the fed state is to manage the body's power generation by regulating…
Q: AB blood marries a man heterozygous for Type B blood. Their children could have each of these blood…
A: Woman have blood group AB so having alleles IAIB and man is heterozygous for B blood group so allele…
Q: What is the continuous challenge that the influenza virus presents toscientists and public health…
A: Influenza refers to an acute respiratory illness that spreads from zoonotic reservoirs among aquatic…
Q: Enzyme B requires Zn2+ (Zinc ion) to be functional. Zn2+ is a Cofactor O Product O Coenzyme O…
A: Coenzymes are chemical molecules that are needed for enzymatic performance by numerous enzymes.…
Q: prit bris Smooth bori x beasd Wrinkled Smooth X Smooth Smooth Smooth Smooth Wrinkled 14. Based on…
A:
Q: In which figure (s), the type of inhibition is reversible? Substrate Figure 1 O Figure 1 O Figure 2…
A: The active site of the enzyme is the site where the specific substrate can bind according to the…
Q: A G-protein is active when: OIt is phosphorylated by protein kinase O Ca2+ is bound to it OGTP is…
A: G proteins are a group of proteins that operate as molecular switching devices within the cells,…
Q: Actin can be used as a loading control in a western blotting experiment. What is the purpose of a…
A: A western blot is a scientific technique for detecting individual protein molecules in a protein…
Q: How can we easily determine VEGF expression in a western blot experiment? By using fluorescent…
A: VEGF (Vascular Endothelial Growth Factor) is a highly potent angiogenic factor that plays a key role…
Q: Breakdown the Science of the Vitamin K. • Structure • Function • Purpose .
A: Introduction Vitamin K is a family of fat-soluble vitamins that aid in blood clotting, bone…
Q: Amniotes are adapted to life on land by______ . a. waterproof skin d. amniote eggs b. internal…
A: Sauropsids and synapsids are members of the amniote group of tetrapod animals. They are…
Q: Practice TEXT ANSWER The inheritance patterns for some traits in guinea pigs are listed in the table…
A: 1. The phenotype of a guinea pig with the genotype HhBBrr is: short, black hair with smooth texture.…
Q: Neutrophil is a common White blood cell present in blood and the percentage of presence is: O 15% O…
A: Neutrophils are the most numerous white blood cells and it is an important part of our immune system…
Q: When sets of genes group together, the result can be multiple traits expressed as a single dominant…
A: Introduction :- Many traits and phenotypic characters in plants and animals, such as height, skin…
Q: Select all that are true regarding the rhizosphere and rhizobacteria. a. the rhizosphere is the…
A: Introduction An ecosystem deals with both biotic and abiotic factors and their interaction with…
Q: Evolution of what biological process is hypothesized to have been made possible by the appearance of…
A: Introduction :- Chlorophyll is a group of green pigments found in the mesosomes of cyanobacteria and…
Q: Many drugs work by interfering with the inactivation of neurotransmitters once they gave been…
A: The body possesses several chemical messengers which are known as neurotransmitters. These…
Q: heterozygous mice for the Sd gene are shown to have relatively shorter or lack a tail true or false
A: Sd / wildtype = heterozygous = short tail Wild type/ wild type = homozygous = long tail Sd/Sd…
Q: What are the structural components of a virus?
A: A virus is a non-cellular organism with an RNA or DNA genome encased in a virus-coded protein coat.…
Q: Classical evolutionary theory assumed that changeleads to improvement. T or F
A: This statement is indeed true since the earlier evolutionary scientists believed that change is what…
Q: For eukaryote cells to evolve into new types of eukaryotic organism, which of the following would…
A: a) All the cells in eukaryotes are not identical. Different eukaryotic cells vary in shape, size,…
Q: Define death in physiological terms. We know that when the human heart stops beating, it can be…
A: The cardiovascular system is a network of arteries and veins in which the heart pumps blood. One of…
Q: How does the selectivity filter of the potassium channel select between potassium ions and sodium…
A: All cells are surrounded by a membrane. These membranes separate the contents inside the cell (in…
Q: What are some of the Select 2 correct answer(s) Decreased central nervous system activation Improved…
A: Neural adaptations to exercise include: - Improved efficiency in neural recruitment patterns…
Q: how has climate change affected the US
A: Climate change affected the United States.
Q: A common step in the isolation of cells from asample of animal tissue is to treat the tissue with…
A: A combination of trypsin and EDTA is often used to dissociate cells and tissues. Trypsin is a…
Q: Explain how snakes are related to lizards
A: Snakes and lizards are closely related to each other that belongs tothe order squamata of the…
Q: Mention the name of the hormone which inhibits the release of growth hormone from the Pituitary…
A: Introduction - The pituitary gland is a tiny gland located beneath the brain and beyond the bridge…
Q: Explain how the body form and development of salamandersdiffer from those of frogs and toads
A: Frogs and toads come under the order belonging to the Amphibian category. Although frogs and toads…
Q: . heterochromatic regions decondense for gene expression a. pre-transcriptional control b.…
A: Heterochromatin regions are condensed regions of the chromatin that are transcriptionally switched…
Q: 4 Describe the Fluid Mosaic Model of the plasma membrane.
A: Introduction :- S.J. Singer and Garth L. Nicolson proposed the fluid mosaic model. This model…
Q: PROCESS: GASTRULATION
A:
Q: Which of the following diet-derived compounds have epigenetic effects? O folic acid O vitamin B12…
A: ANSWER;- Folic acid Explain;- Folate, along with other B-nutrients, assumes an urgent part in the…
Q: Nondisjunction can happen in males and females. It has been found to correlate with advanced…
A: Non disjunction is the failure of chromosome separation during meiosis that cause to produce…
Q: Mention the name of the hormone which inhibits the release of growth hormone from the Pituitary…
A: The term "growth hormone" is generally been stated to describe and defined as follows:1. The growth…
Q: Which of the following would be the first step in biosynthesis of a virus with a - (minus) strand…
A: D. Synthesis of double stranded RNA from an RNA template
Q: All of the following molecules can act as second messenger Except: O Enzyme O CAMP O Calcium ions O…
A: First messengers are usually extracellular factors. Hormones and neurotransmitters are the examples.…
Q: Which of the following does NOT happen in the germinal period? a. dividing mass of cells travels to…
A: During the nine months of a female's pregnancy, an infant goes through a lot of changes. An infant's…
Q: In the course of evolution of the eukaryotic cell, the ability to store newly synthesized molecules…
A: Introduction :- Eukaryotes are organisms with a nucleus and other membrane-bound organelles in their…
Q: Activity C: Genetic Mutations: A mutation is a change in the normal DNA sequence of a gene. There…
A: DNA is the genetic material present in most organisms and genes form the basic functional unit of…
Q: Both cartilaginous and bony fishes have______ . a. jaws d. a swim bladder b. a bony skeleton e. a…
A: The term vertebrate is derived from the word vertebrae, which refers to the bones that make up the…
Q: The ____and_____ are grouped as Ecdysozoabecause they both molt.a. cnidarians/arthropods c.…
A: As they mature, all members of Ecdysozoa superphylum molt or lose their cuticle. They secrete a…
Q: the glycolytic enzyme pyruvate kinase is activated by dephosphorylation and inactivated by…
A: Pyruvate kinase It's an important glycolysis enzyme that helps converting PEP (phosphoenolpyruvate)…
Q: Please answer asap and in short and content should not be palgarised please
A: Cannnabalism is a phenomena in which an individual eats another individual of the same population.…
Q: 17 Refer to the table. Reaction Chemical equation (kcal/mol) 2 glucose → maltose + H₂O +4.0…
A: The chemical reactions take place with the change of energy. The spontaneous reactions release…
Q: Examine the network motifs in Figure Q8–5.Decide which ones are negative feedback loops and whichare…
A: Introduction Protein is the key biomolecule in the biological system, any important physiological…
Q: Tropomyosin, at 93 kd, sediments at 2.6S, whereasthe 65-kd protein, hemoglobin, sediments at 4.3S.…
A: Introduction Tropomyosin is a 40-nanometer long rod-shaped molecule. Along the actin filaments, two…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- 1. The lubber grasshopper is a very large grasshopper and is black with red and yellow stripes. The alleles for red and yellow stripes are co-dominant. Assume that red stripes are expressed from the homozygous RR genotype, yellow stripes from the homozygous YY genotype, and both from the heterozygous genotype RY. a. How many of each genotype will be found in the F1 generation resulting from a cross of two grasshoppers, both with red and yellow stripes? b. How many of each phenotype?2. a. A Drosophila male from a true-breeding stockwith scabrous eyes was mated with a female from atrue-breeding stock with javelin bristles. Both scabrous eyes and javelin bristles are autosomal recessive mutant traits. The F1 progeny all had normaleyes and bristles. F1 females from this cross weremated with males with both scabrous eyes andjavelin bristles. Write all the possible phenotypicclasses of the progeny that could be produced from the cross of the F1 females with the scabrous, javelin males, and indicate for each class whether it is arecombinant or parental type.b. The cross in part (a) yielded the following progeny:77 scabrous eyes and normal bristles; 76 wild type(normal eyes and bristles); 74 normal eyes andjavelin bristles; and 73 scabrous eyes and javelinbristles. Are the genes governing these traits likelyto be linked, or do they instead assort independently? Why?c. Suppose you mated the F1 females from the crossin part (a) to wild-type males. Why would thiscross fail…17. In rats, the following genotypes of two independently assorting autosomal genes determine coat color.A_B_ (gray)A_bb (yellow)aaB_ (black)aabb (cream)A third gene pair on a separate autosome determines whether or not any color will be produced.The CC and Cc genotypes allow color according to the expression of the A and B alleles.However, the cc genotype results in albino rats regardless of the A and B alleles present. Given the inheritance pattern of coat color in rats described in Problem 17, predict the genotype and phenotype of the parents who produced the following offspring: (c) 27/64 gray: 16/64 albino: 9/64 yellow: 9/64 black: 3/64 cream
- 2. In Drosophila, gray body color is dominant to ebony body color, while long wings are dominant to vestigial wings. Assuming that the F1 individuals are homozygous, work the following crosses through the F2 generation, and determine the genotypic and phenotypic ratios for each generation. (a) gray, long × ebony, vestigial3. Two Drosophila flies that had normal (transparent, long) wings were mated. In the progeny, two new phenotypes appeared, dusky wings (having a semi-opaque appearance) and clipped wings (with squared ends). The progeny were as follows: Females: Males: 179 transparent, long 58 transparent, clipped 92 transparent, long 89 dusky, long 28 transparent, clipped 31 dusky, clipped a) Provide a genetic explanation for these results, showing genotypes of parents and of all progeny classes under your model. b) Design a test for your model.5 f There are two genes that determine the coat colour expression in dogs: eumelanin and merle. These genes are located on two separate chromosomes. For the eumelanin gene, black coat colour (E) is dominant over red coat colour (e). The merle gene controls the degree to which these coat colours are expressed through incomplete dominance. The following table describes the merle gene expression. Genotype MM Mm mm Phenotype White AAY Half colour (Grey or light red) Full colour (Black or Red) 1. If a dog breeder wants to determine the unknown genotype of a dog, what colour of dog must she use as a testcross? 2. A white dog was testcrossed, and all of the puppies had light red coats. What is the genotype of the white dog? Use a Punnett square to show your work. Hint - When a trait is controlled by two genes, an individual's genotype consists of 4 letters. = = = B I 123 ||| 14 E E I ос C GO * ●● ● ●0 00 00 00 ✓ C U up X₂ x²
- 1.In Drosophila melanogaster body color is controlled by one gene while wing shape is controlled by a second gene. Gray body color is dominant to black body color, and normal wings are dominant to vestigial wings. Flies homozygous for gray body color and vestigial wings are crossed with flies homozygous for black body color and normal wings. A.compare the possible f2 generation genotypes and phenotypes and proportions if these two traits. B.How does your answer change if one of the original parents is homozygous for gray body color and normal wings while the other has black body color and vestigial wings?4. In Drosophila melanogaster, a yellow-bodied (dark coloured) male with vestigial (underformed) wings is crossed to a wildtype female (brown body, red eyes). The F1 generation are all wildtypes. An F1 male and female are crossed and the F2 progeny consists of 16 vestigial-winged males with yellow bodies, 48 yellow males with normal wings, 15 males with vestigial wings and yellow bodies, 49 wildtype males, 31 vestigial winged females with brown bodies and 97 wildtype females. Explain the inheritance pattern of the 2 genes.a. In Drosophila, crosses between F1 heterozygotes ofthe form A b / a B always yield the same ratio ofphenotypes in the F2 progeny regardless of the distance between the two genes (assuming completedominance for both autosomal genes). What is thisratio? Would this also be the case if the F1 heterozygotes were A B / a b? (Hint: Remember that inDrosophila, recombination does not take placeduring spermatogenesis.)b. If you intercrossed F1 heterozygotes of the formA b / a B in mice, the phenotypic ratio among the F2progeny would vary with the map distance betweenthe two genes. Is there a simple way to estimate themap distance based on the frequencies of the F2phenotypes, assuming rates of recombination areequal in males and females? Could you estimatemap distances in the same way if the mouse F1heterozygotes were A B / a b?
- 1. The allele G for yellow stigma is completely dominant to green (g). Supposingtwo strains of autotetraploid plants are available and their genotypes are as follows:GGgg – in this plant the gene is close to the centromereGggg – in this plant the gene is far from the centromere If these two plants are crossed:a) provide the gametes that can be obtained from the two plants;b) provide the genotypic and phenotypic ratios of the offspring. 2. Consider the illustration below. Diagram the configuration you would observe at Anaphase I if crossing-over happens within the inversion. (IMAGE ATTACHED)19) In Drosophila fruit flies, the gene controlling bristle length is X-linked. Wild type flies have long bristles; short bristles is a recessive trait. You cross a long-bristled female fly to a short-bristled male fly. All the F1 progeny have a wild type phenotype. Next, you cross the F1 flies to produce an F2 generation. If there are a total of 200 F2 flies, how many of the F2 females are expected to have short bristles? V/100 Wild type fruit flies have grey bodies and straight wings. Yellow bodies and curly wings are both recessive phenotypes. The body color gene is X-linked; the wild type allele is designated XY+. The wing shape gene is autosomal; the wild type allele is designated C+. You cross a pure breeding yellow-bodied, curly-winged female with a grey-bodied, straight-winged male to produce an F1 generation. Use this information to answer questions X-Y below. You cross two F1 flies to produce an F2 generation. You select a female F2 fly that is phenotypically wild type. What…7) In cats, the gene for coat color is both X-linked and incompletely dominant. There are black coat and yellow coat alleles, with calico (tortoise shell) as the heterozygous form. If a yellow male mates with a calico female, what are the expected offspring phenotypes (in percent)? hbit