Biology

a DNA strand witha base sequence of ACTTCGCATG when replicated would yield a newly formed strand of the same base sequence true or false
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An online article that your professor asked you to critique states that African Americans cannot contract malaria, even if they go to endemic areas, because of a genetic trait that confers protection from the disease. Why is this article incorrect?A. African Americans have lost the allele for normal red blood cells through genetic drift from their ancestral African population. B. balanced polymorphism means that not all African Americans are heterozygous for the sickle cell trait. C. protection from malaria cannot be conferred by genes. D. African Americans are more likely to have thalassemia, which does not protect a person completely from contracting malaria.
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why is dna the molecule of inheritance
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Describe an activity to demonstrate phototropism Is this correct pls check now itself
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NEED HELP ASAP PLEASE!
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A man has blood type O, Rh negative. These are both recessive traits. He is married to a woman who has blood type A, Rh positive. These are both dominant traits. Blood type and Rh factor are not linked genes. This couple has 3 children, two type A, Rh positive and one type A, Rh negative. What is the mother's most likely genotype? A)IAIARR B)IAIARr C)IAIORr D)IAIArr
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In fruit flies, the color of the eyes is sex-linked (on the X chromosome). A cross of the flies in the image will producea100% white-eyed flies b100% of the females with white eyes, 50% of the males with white eyes. c100% red-eyed flies d100% of the females with red eyes, 100% of the males with white eyes.
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What is Antarcticas rarest commodity
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Which vegetable has the highest protein content?
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Which of the following statements is/are accurate? A. One species of sea urchins can not fertilize another closely related species because the eggs do not have a receptor for the sperm. This is a good example of a hybrid breakdown. B. Horses and Mules can be bred but their offspring is typically sterile. This could be an example of a hybrid breakdown. C. Damselflies have sensory receptors that are sensitive to touch (tactile cues). Two related species of damselflies are unable to mate because their touch cues are not compatible. This is a good example of gametic isolation. D. One species of sea turtle mates during the early spring and a closely related species mates during late spring. This is an example of temporal isolation. E. One sponge species releases its gametes during the night and another species releases its gametes during the day. This is an example of ecological isolation.
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Archaea frequently inhabit the guts of animals that consume foods rich in cellulose. These prokaryotes assist in the digestion of cellulose and release "marsh gas" as a waste product. Archaea in the same group live in anaerobic muck in wetlands. These archaea would be considered _____.a.)methanogensb.)extreme halophilesc.)sulfur bacteriad.)extreme thermophiles
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Researchers believe that the size difference between male and female brains results from the influence of: a. gender identity. b. progesterone. c. testosterone and estrogen. d. Wolffian inhibiting hormone.
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what is the independent variable mean
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4. The skull and spinal column are parts of the (1 point)O appendicular skeleton.axial skeleton.O flat bone group.O peripheral skeleton.
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Which description best explains the role of DNA in the differentiation of the cells within an organism?
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Because the researcher had access to twenty years of data on the same participants in an education program, the researcher was able to perform a(n) _________ study.
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Which of the following techniques is used sparingly because there is a slight but genuine risk of miscarriage or damage to the fetus while having a 99% accuracy in diagnosing genetic problems? amniocentesis CT scan ultrasound chorionic villus sampling
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You look for shells when you visit the beach. However, if you're hiking in the mountains and you find shells by accident, you know that
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You observe continuous variation in tail length in a wild population of rats. Describe an experiment to determine whether this variation is an example of variable expressivity or continuous variation?
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Alonzo graduates with a 3.8 GPA in Accounting from a New York university and receives offers of employment from three of the Big Four accounting firms. While considering his options, a mid-sized firm in California calls and offers him twice the starting salary of his top offer. The only caveat is he needs to show up at the Los Angeles office within the next week to start work immediately. Alonzo excitedly decides to take the California job. He refuses the other employment offers, breaks his lease in New York, sells or gives away most of his possessions, buys a new car, and heads for L.A. the next day. When he arrives at the Los Angeles office three days later, the firm apologizes and informs Alonzo that the position is no longer available due to the loss of a major client.
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Lisa is investigating a chemical reaction involving carbon compounds. Which of these results could NOT occur, according to scientific lawsabout chemical reactions, matter, and energy?AThe reaction releases energy to the environment.B. The reaction absorbs energy from the environment.OC. The mass of carbon in the products is greater than the mass of carbon in the reactants.D. The mass of carbon in the products is equal to the mass of carbon in the reactants.E. The reaction occurs faster in the presence of a certain protein.Review progressQuestion 4of 10BackNext
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An enzyme-linked immunosorbent assay requires: A) a radioactive substrate. B) a radioactive standard for binding to the antibody. C) aromatic amino acids. D) a catalytic antibody. E) an antibody that binds the protein of interest.
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Blue whales (Balaenoptera musculus) can weigh up to 170 tons and are the largest animals alive today. Their large size is thought to have protected them from large predators, such as Megalodon (Carcharocles megalodon), which would have preferred to eat smaller, less dangerous whales. What process best explains the evolution of the enormous blue whale body size a. Natural selection.b. Migration.c. Genetic drift.d. Non-random mating.
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