GuideFoot - Learn Together, Grow Smarter. Logo

Questions in biology

📝 Answered - Which region of a growing bone contains the epiphyseal plate? A. Proximal epiphysis B. Periphysis C. Metaphysis D. Distal epiphysis E. Diaphysis

📝 Answered - A cross between white and yellow summer squash gave progeny of the following counts: | Color | White | Yellow | Green | | ----------------- | ----- | ------ | ----- | | Number of progeny | 155 | 40 | 10 | A researcher wants to test if these data are consistent with the 12:3:1 ratio predicted by a certain genetic model. Which one is the correct R code to carry out the chi-square test? A. `x <- c(155,40,10)` `chisq.test(x, p=c(12 / 16, 3 / 16, 1 / 16))` B. `x <- c(155,40,10)` `chisq.test(x,p=c(12,3,1))` C. `x <- c(153.75,38.4375,12.8125)` `chisq.test(x,p=c(12/16,3/16,1/16))` D. `x <- c(155,40,10)` `chisq.test(x, p=c(0.75,0.28,0.6))`

📝 Answered - Compare all the organisms. What trend do you see? The proportions of DNA bases vary greatly among organisms. The proportions of DNA bases are similar in closely related organisms, but different in organisms that are not closely related. The proportions of DNA bases are similar among all organisms. | Organism | A | T | G | C | |--------------|------|------|------|------| | Human | 30.9 | 29.4 | 19.9 | 19.8 | | Chicken | 28.8 | 29.2 | 20.5 | 21.5 | | Grasshopper | 29.3 | 29.3 | 20.5 | 20.7 | | Sea urchin | 32.8 | 32.1 | 17.7 | 17.3 | | Wheat | 27.3 | 27.1 | 22.7 | 22.8 | | Yeast | 31.3 | 32.9 | 18.7 | 17.1 | | E. coli | 24.7 | 23.6 | 26.0 | 25.7 |

📝 Answered - Which of the following best defines gene flow? A. the sum of all genetic traits in a population's individuals at a given time B. any movement of genes from one population to another C. any movement of organisms from one environment to another D. the random change in the frequency of an allele in a population

📝 Answered - If someone asked you whether personality runs in our genes, how might you respond based on what you learned in this activity?

📝 Answered - Which of the following best describes an advantage of genetic engineering? A. can reduce long-term health problems among consumers of GMO B. Increases regulation of sale and consumption of healthy food C. Reduces harmful impact on natural ecosystem in the future D. Can produce crops having high level of nutrition

📝 Answered - At birth, the sense of a) hearing is poorly developed when compared to the other sensory systems. b) smell c) touch d) vision

📝 Answered - Severe anemia may trigger an adaptive conversion of A. red marrow to yellow marrow. B. spongy bone to compact bone. C. bone marrow to spongy bone. D. yellow marrow to red marrow. E. compact bone to spongy bone

📝 Answered - The part of the plant that functions in elevating the leaves, fruits, and flowers is called the A. pistil B. hull C. root D. stem

📝 Answered - Genetic drift in a population affects the gene pool in which of the following ways? A. decrease in genetic variation B. increase in genetic variation C. increased in mutations D. decreased in gene flow