In agriculture, an advantage of triploidy in plants is that the plants area. more fertile.b. often seedless.c. always disease-resistant.d. all of the above.
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In agriculture, an advantage of triploidy in plants is that the plants are
a. more fertile.
b. often seedless.
c. always disease-resistant.
d. all of the above.
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- Which of the salt-marsh grasses is a polyploid? a. Spartina maritima b. Spartina alterniflora c. Hybrid between Spartina maritima and Spartina alterniflora d. Spartina anglica e. Both c and dIn Iowa, a company called Team Corn works to ensure that fields of seed corn outcross so that hybrid vigor can be maintained. They do this by removing the staminate (that is, pollen-producing) flowers from the corn plants. In an attempt to put Team Corn out of business, you would like to develop genetically engineered corn plants that a. contain Z genes to prevent germination of pollen on the stigmatic surface. b. contain S genes to stop pollen tube growth during selffertilization. c. express B-type homeotic genes throughout developing flowers. d. express A-type homeotic genes throughout developing flowers.In biology, what do you think does the garden peas has as a good model for genetic studies? A.) Few offsprings per generation B.) Has several paired characteristics C.) Long generation time D.) Only capanble of self-fertilization
- Experimental advantages of using pea plants include which ofthe following?a. They came in several different varieties.b. They were capable of self-fertilization.c. They were easy to cross.d. All of the above were advantagesWhich of the following observations would provide the strongest evidence that two plants belong to different biological species? a.The leaves and flowers show morphological differences. b.There are variations in their RNA sequences. c.They produce viable but sterile offspring. d.They occupy unique habitats in an ecosystem.Figure 4 shows the hybridization process between plant P and Q. a) Determine the sterile hybrid plant and the fertile hybrid plant. b) What is process A? c) State the chromosome number for the fertile hybrid plant.
- Hibiscus plants have different varieties of flowers. In an instance, both the red and white flowers showed that they are incompletely dominant with each other. What is the percentage that the color of the resulting flower will be red? A) 50% B) 25% C) 100% D) 75%Hibiscus plants have different varieties of flowers. In an instance, both the red and white flowers showed that they are incompletely dominant with each other. What is the percentage that the color of the resulting flower will be pink? A) 100% B) 50% C) 25% D) 75%Hibiscus plants have different varieties of flowers. In an instance, both the red and white flowers showed that they are incompletely dominant with each other. What will happen if these two varieties are bred? Explain. A) the flowers will have a pink color B) the flowers will grow more petals C) the flowers will have red and white patches D) the flowers will have a red color
- Rice is a staple food in Asia. In the 1950s, Asia faced food shortages and an impending famine. If you have relatives that lived in Asia during the ’50s and ’60s, they may tell you that due to the rice shortage, many starved and those who were lucky had to supplement their diet with other crops, such as barley. In 1962, an organization focused on research and development of rice called the International Rice Research Institute (IRRI) developed a high-yielding variety of rice by crossing the two types of rice from Indonesia and China. The result was groundbreaking. The new variety called IR8 (India Rice 8) increased its yield as much as 10 times the traditional variety of rice. By the early 1970s, many rice farmers in India, the Philippines, and Vietnam switched to cultivating IR8 rice, making these countries into major rice exporters, preventing a mass famine in Asia, and saving millions of lives. In many major Canadian cities, a GMO-free, organic diet is becoming more popular, as can…Compare what happens to a spore mother cell as it gives rise to a spore with what happens to a spore as it gives rise to a gametophyte. a. The spore mother cell and the spore both go through meiosis. b. The spore mother cell and the spore both go through mitosis. c. The spore mother cell goes through mitosis, and the spore goes through meiosis. d. The spore mother cell goes through meiosis, and the spore goes through mitosis.If the VIN3 gene had a loss-of-function mutation, how do youthink that would affect the phenotypes of summer-annual andwinter-annual Arabidopsis plants?a. Neither type would flower.b. Both types would flower at the proper time.c. The summer type would flower, but the winter type wouldnot.d. The winter type would flower, but the summer type wouldnot.
