QQuestionBiology
QuestionBiology
1. The most common cause of sympatric speciation in plants is polyploidy.
True
False
2. If q = .2, then 2pq equals
0.8
0.32
0.16
0.4
3. Acquired traits can be inherited.
True
False
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Answer
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Step 1:
To determine if the most common cause of sympatric speciation in plants is polyploidy, we need to understand what sympatric speciation and polyploidy are. Sympatric speciation is the formation of new species from a single ancestral species while inhabiting the same geographic area. Polyploidy, on the other hand, is a condition in which an organism has more than two sets of chromosomes, usually coming from the combination of two different species' gametes.
Step 2:: Understand the given information and concepts.
Step 3:: Analyze the relationship between sympatric speciation and polyploidy.
Polyploidy can lead to the formation of new species by isolating reproductive barriers, which is a mechanism of sympatric speciation. This is because the polyploid offspring will be genetically distinct and often unable to reproduce with the parent species, leading to the creation of new species in the same geographical area.
Step 4:: Conclude that polyploidy is a significant cause of sympatric speciation in plants.
Final Answer
2. To calculate 2pq when q = 0.2, we first need to understand the concept of hardy-weinberg equilibrium, where p and q are allele frequencies, and p + q = 1. Here, p represents the frequency of the dominant allele, and q represents the frequency of the recessive allele. Step 1: Recall the given information, p + q = 1, and q = 0.2. Step 2: Solve for p: p = 1 - q = 1 - 0.2 = 0.8 Step 3: Calculate 2pq: 2pq = 2 * 0.8 * 0.2 = 0.32 3. To determine if acquired traits can be inherited, we need to understand the difference between acquired traits and genetic traits. An acquired trait is a characteristic that an organism develops during its lifetime due to environmental factors or experiences, while a genetic trait is determined by an organism's DNA. Step 1: Understand the difference between acquired traits and genetic traits. Step 2: Recall that acquired traits are not passed on to offspring because they are not part of the organism's genetic material. Only genetic traits, determined by DNA, can be inherited.
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