Biology

An RFLP can be created:_________. a) only by a mutation creating a new restriction enzyme recognition site b) only by a basepair change within the restriction enzyme recognition site c) only by a deletion removing a restriction enzyme reognition site d) by any mutational event that cretes or deletes a restriction enzyme recognition site e) only in RNA
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Within any large animal population, there is _______ a variety of traits. And between different animal populations, there is _______ a variety of traits. A. never; sometimes B. sometimes; sometimes C. never; always D. always; always
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Cystic fibrosis is a generic disorder
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Match each description with correct process.A) occurs only in cells containg chlorophyll F)CO2 and H2O are reactantsB)Carried ob by cells G) Does not need lightC) Produces energy H) Occurs in MitochondriaD)Produces carbhydrates (sugars) I) Occurs in heterotrophsE) CO2,H2O, and ATP are products J) Breaks bonds between phosphate
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Identify the four postulates of natural selection.Select all that apply.1. Individuals in a population all possess the same traits.2. All individuals in a population have equal reproductive success.3. Some trait differences are heritable.4. Individuals with certain traits are more likely to survive and reproduce.5. Individuals in a population vary in the traits they possess.6. Survival and reproductive success are variable among individuals in a population.
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What kind of stem cells can develop into any kind of cells in the human body orthe placenta?A. Pluripotent stem cellsB. Totipotent stem cellsC. Multipotent stem cellsD. Unipotent stem cells
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This law states that plants and animals evolve in a consistentsequence
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I need help with my homework that is due tomorrow and I can not find the answers in the book or online.
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At what age level do most people become aware of the changes in their bodies related to the aging process?
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a.What are at least 3 advantages of returning the forest along Lake Superior to what it was like in its natural state, 150 years ago?
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A woman with Turner syndrome is found to be color-blind (an X-linked recessive phenotype). Both her mother and her father have normal vision. a. Explain the simultaneous origin of Turner syndrome and color blindness by the abnormal behavior of chromosomes at meiosis. b. Can your explanation distinguish whether the abnormal chromosome behavior occurred in the father or the mother? c. Can your explanation distinguish whether the abnormal chromosome behavior occurred at the first or second division of meiosis? d. Now assume that a color-blind Klinefelter man has parents with normal vision, and answer parts a, b, and c
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Prompt 1 Example: One characteristic of a stable society is ________. This is because _________. Another Characteristic is _________. This characteristic shows that the society is stable because _________.Prompt 2 Example: Energy and economic development are related through ___________. This is because ____________.Prompt 3 Example: One benefit of biotechnology is __________.This is because _______. Another benefit is __________. because it _________.
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Diatoms and dinoflagellates have a variety of shapes. Why is their shape an adaptation for staying afloat as a phytoplankton?
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A student observed several slides with different cell types under a microscope. What's Pair slides contain cells that result from meiosis.
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Cells of a normally rod-shaped bacterium (e.g., Bacillus subtilis) that have completely lost the ability to produce the MreB protein would mostly likely be Choose one: A. nonflagellated. B. stalked (like Caulobacter). C. coccoid-shaped. D. filamentous in form. E. unable to divide symmetrically.
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For questions 1-5, complete each statement by writing the correct word orwords.1. The building blocks of DNA are2. Nucleotides in DNA are made of three basic components: a sugar called, and a nitrogenous3. DNA contains four kinds of nitrogenous bases:, and4. In DNA, can be joined in any order.5. The nucleotides in DNA are joined bybonds.
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. A normal vision male marries a female who is a carrier of the color-blind gene and she becomes pregnant. What will a genetic counselor tell the parents regarding the a) percentage of having a daughter who is color-blind; b) what is the percentage of having a son who is color-blind? Consider a different couple with a female with normal vision and a male with normal vision. Would it be possible for their daughter to be a carrier for color-blindness? Explain your answer.
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If one compares the base sequences of related genes from different species, one is likely to find that corresponding ________ are usually conserved, but the sequences of ________ are much less well conserved. If one compares the base sequences of related genes from different species, one is likely to find that corresponding ________ are usually conserved, but the sequences of ________ are much less well conserved. A.introns; B.exons exons; C.introns chaperons; D. exons introns; E. proteins introns; F.chaperons
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translate dna into mRNA
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Which of the following would be a reason for species to undergo cyclic population changes?
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what 4 kingdoms are made up of eukaryotes
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Which of the following federally subsidized food programs is designed to improve the nutritional status specifically of low-income pregnant and breastfeeding women and their preschool children in the United States?WIC (Women Infants Children)
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What does this same experiment tell you about light waves?
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Which of the following statements are accurate? (MORE THAN ONE ANSWER)A. Invertebrates are animals that lack a backbone B. Ecdysozoans typically have an exoskeleton C. Bilaterians include three clades:1) Deuterstomia 2) Lophotrochozoa 3) Ecdysozoa D. Givens about animal "A' I. the animal has three prominent germ layers II. an animal has bilateral symmetryIII. the animal lacks a backbone You would be able to classify this animal, animal A, as a bilaterian E. All animals share a common ancestor
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