Scientists on a fossil expedition in the Florida Everglades excavated an area with four strata (layers). Z Hawthorn Group Y Tamiami Formation X Undifferentiated sediments W Miami Limestone W Y Z They found vertebrate fossils in all four strata: 124 fossils in the Miami Limestone, 75 fossils in the Undifferentiated sediments, 138 fossils in the Tamiami Formation, and 62 fossils in the Hawthorn Group. The scientists concluded that the Hawthorn Group contained the oldest fossils. Is this a valid conclusion? Yes. The Hawthorn Group must contain the oldest fossils because this layer has the smallest number of vertebrate fossils. CYes. The Hawthorn Group must contain the oldest fossils because it is the lowermost layer of soil and rock excavated by the scientists. No. The Tamiami Formation must contain the oldest fossils because it contains the greatest number of vertebrate fossils discovered. No. The Miami Limestone must contain the oldest fossils because it is the uppermost layer, just beneath the water of the Everglades. The Everglades X

Q: differential gene action or selective expression of genes confers to the phenotype of the cell true…

A: ANSWER;- false

Q: times exercise intensity may be measured by all of the following except: xygen consumption eart rate…

A: Exercises makes a lot of changes inside the body. It makes changes in the way the heart beats and…

Q: Which method provides the most accurate evidence for scientists to use when determining evolutionary…

A: Comparative anatomy is the study of the "similarities and dissimilarities" between various objects.…

Q: 1. Length of fur is also genetically determined. The allele L produces long fur and its…

A: * Given that Length of fur is Genetically determined. *The allele L produce long fur and another…

Q: 1. Nutrigenomics is the study of how diet and gene expression interact throug molecular mechanisms.…

A: Epigenetic modifications are alterations in the genes without changing the exact or original DNA…

Q: What does this diagram illustrate? Complete the labels.

A: Bacteriophage is a specific virus that can infect the bacteria. These can cause severe damage to the…

Q: In photosystem II proton coupled electron transfer reactions are thought to be necessary after which…

A: *The enzyme photosystem II catalyzes light driven oxidation of water in oxygenic photosynthesis.…

Q: Describe the effects of streptococcal haemoysins giving an example of streptococci that can manifest…

A: A "microbe" is a living entity that is so tiny that it cannot be seen with the naked eye.…

Q: A woman who is colorblind (XcXc) can expect 50% of her male offspring to be colorblind. 100% of her…

A: Introduction Color blindness is a condition in which you view colours differently than most people.…

Q: Which region will add the most people between 2013and 2050? Which will increase by the greatest…

A: Population growth can be defined as the number of individuals added in previous population in an…

Q: in which bronchial and pulmonary disease do tubercles encapsulate bacteria, resulting in lung…

A: Tuberculosis is contagious. This indicates that the bacterium can easily transmit from one sick…

Q: .People with Type O blood lack antigens on the blood cells, if a patient with Type B blood receives…

A: INTRODUCTION Organs, white blood cells, proteins, and chemicals make up the immune system, which is…

Q: A commercial stage micrometer has a total length of 1000 μm and is divide into 100 equal divisions.…

A: Introduction Meiosis is the cell division process that results in the formation of egg and sperm…

Q: 1. The impact of diet on an individual may vary depending on the individual's genetic makeup. II.…

A: Nutrigenomics is the branch of science that investigates the link between nutrition and changes in…

Q: cell determination is the expression of the cell's specialized role true or false

A:

Q: Icefish live in the extremely c They are the only vertebrates bin. They have a large heart a their…

A: A new study has discovered a concerning link between warmer seas, declining sea ice levels, and…

Q: What are the FOUR(4) distinct steps of translation elongation cycle for a growing polypeptide chain?

A: The translation is the process of protein synthesis from the genetic codon present in the mRNA. This…

Q: Choose any pentapeptide composed of five different amino acids.  List the amino acids.  Present one…

A: INTRODUCTION In cells, messenger RNA is a molecule that transports information from the nucleus to…

Q: Two individuals, labeled A and B as shown in the following figure, what is the probability of…

A: Gene  Gene is the sequence of nucleotide in DNA which is transferable from parents to their…

Q: How does oxygen and carbon dioxide enter and leave the lung capilliaries respectively? (Multiple…

A: The billions of alveoli in the lungs, as well as the capillaries which surround them, interchange…

Q: friend tells you the following story. "My aunt just received a heart transplant. Her doctors warned…

A: * Here a friend tells that his aunt received heart transplant and doctors warned her body might…

Q: Explain the significance of step-wise release of energy in respiration

A: * Energy will be released in our body by means of metabolism and it's pathways. * In humans and…

Q: 1. 2. 3. 4. 5. Most Recent Varieties STRAWBERRY Its Characteristics How It Was Developed

A: Strawberries are best planted in the spring as early as several weeks before the last prose date by…

Q: 1. Identical twins may show dissimilar phenotypes due to changed methylation patterns of the…

A: Twins are two offspring produced by same mother in same pregnancy.  Twins can be identical and non…

Q: The bacterial generation time refers to a.   The time required for a population of organisms to…

A: Introduction Bacteria are ubiquitous, mostly free-living small single-celled organisms, or simple,…

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: Question 62 Joshua Akey found evidence that historic mating and hybridization between Modern Humans…

A: Human evolution is defined as "the process by which humans evolved on Earth from now-extinct apes."…

Q: 4.Which of the following immune responses occurs when a cytotoxic T cell is activated? Note: This is…

A: Cytotoxic T cells:  A cytotoxic T cell (CD8+ T cell) is a lymphocyte that is responsible for…

Q: The science of producing and transmitting sound waves in materials has become widespread with many…

A: The ultrasonic waves have good propagation in the human body. Thus, it have been widely applied in…

Q: You give a good overview of sexual and asexual reproduction in fungi. However, which one is more…

A: Fungi can reproduce both sexually and asexually. Imperfect fungus reproduce only asexually, whereas…

Q: If the tobacco plant parents are both heterozygous for color, what are the possible genotypes and…

A: INTRODUCTION Phenotype : physical appearance of an organism. Genotype : Genetic makeup of an…

Q: in the abs The diagram shows the process of cellular respiration both in the presence an oxygen.…

A: Aerobic respiration takes place in the presence of oxygen. The fermentation pathways of energy…

Q: 11.Which of the following blood vessels does not carry oxygenated blood?

A: Oxygenated and deoxygenated blood Oxygenated blood is the blood that contains oxygen or also called…

Q: What factors would contribute to preservation of DNA?

A: Introduction DNA preservation (also known as DNA banking):- It allows you to store some of your…

Q: How does the ras path trigger the initiation of a new branch off an existing actin filament –…

A: Actin (thin filament) and myosin are examples of contractile proteins (thick filament). Troponin…

Q: Describe the anatomical and physiological adaptations that aroseduring the transition to life on…

A: Life evolved underwater so the earth was totally covered with water at the beginning of humankind,…

Q: Which of the following is a contrast in genetics organization between COVID19’s RNA & human DNA a)…

A: DNA and RNA are the two primary categories of nucleic acids. Nucleotides, which have a five-carbon…

Q: 25. What would be the effect of severing the corpus callosum?

A: Introduction :- The corpus callosum is a large bundle of more than 200 million myelinated nerve…

Q: What is the importance of surfactant in the lungs?   it reduces the surface tension of water in the…

A: Introduction Pulmonary surfactant (PS) is a protein and lipid mixture produced by alveolar type-II…

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: 4. White fruit color in summer squash is dependent on a dominant gene (W) and colored fruit to the…

A: In this cross, the recessive allele of one gene masks the effects of either allele of the second…

Q: Hello! What are the two drugs that have potential for treating Alzheimer’s diseases? And compare…

A: Answer :- The two drugs that have potential for treating Alzheimer’s diseases are :-  -…

Q: Draw the steps that take place during conjugation.

A: Bacterial conjugation is a process by which genetic material is transferred from one bacterium (the…

Q: Make a food web consisting of (rice, cooking oil, oyster sauce, green peas, Onion, Garlic, Egg

A: There are lot of common points in between the several food chains. These common points form the…

Q: What molecules are released by activated helper T cells? Note: This is a multiple question, choose…

A: As they are necessary for practically all adaptive immune responses, helper T cells are perhaps the…

Q: 4) Which do you believe has a better impact on health: macronutrients or micronutrients? Explain…

A: NUTRIENTS: The chemical substances required by an organism for its growth, survival, and…

Q: . differential lengths of poly-A tails affect mRNA stability a. pre-transcriptional control b.…

A: In the cytoplasm, the poly(A) tail interacts with the 5′ end of mRNA via eIF-4G, which binds both…

Q: methylation

A: The DNA methylation regulates the gene expression by recruiting  the proteins that are involved in…

Q: PROTISTS Supergroup Excavata Subgroup Fornicata Distinguishing properties Form cysts Important…

A: Protists are small eukaryotic organisms that come in a variety of shapes and sizes. Protists can be…

Q: 9.Statement 1: Major histocompatibility complex proteins help the immune system recognize 'self' vs…

A: The immune system is a collection of biological mechanisms that guard an organism against disease.…

Paleontology

A branch of science concerning the scientific study of life from ancient times is known as paleontology. The scientists working on paleontology are known as paleontologists. Paleontologists collect the fossils of organisms from ancient times to classify them. The paleontologists also study the environment from ancient times to study the interactions between different organisms.