Question

if dna from a son and his dad are compared, which of the following would be the likely result?
the sons genomic dna would be a 100 percent match to his dads genomic dna, and there would also be a 100 percent match in the mitochondrial dna.
the sons genomic dna would be at least a 50 percent match to his dads genomic dna, and there would also be at least a 50 percent match in the mitochondrial dna.
the sons genomic dna would be at least a 50 percent match to his dads genomic dna, and there would be no match in the mitochondrial dna.
the sons genomic dna would be a 100 percent match to his dads genomic dna, and there would be no match in the mitochondrial dna.
question 37
1 pts
the greenhouse effect is most similar to
heating up the air inside a car by parking it in the sun
growing plants in your office to reduce co2 levels
burning kerosene in a heater to warm a cabin
cooking food with a charcoal grill

Explanation:

First Question (DNA Comparison)

1. Genomic DNA Inheritance: A son inherits half of his autosomal genomic DNA from his father (and half from his mother), so genomic DNA match is at least 50% (considering autosomes; Y - chromosome is also from father, adding to the match, so "at least 50%").
2. Mitochondrial DNA Inheritance: Mitochondrial DNA (mtDNA) is inherited from the mother only. So a son's mtDNA comes from his mother, not his father, meaning no match in mtDNA between son and father.
3. Eliminating Other Options:

• Option 1: 100% genomic match is wrong (son has mother's DNA too) and 100% mtDNA match is wrong (mtDNA from mother).
• Option 2: mtDNA match is wrong (no mtDNA from father).
• Option 4: 100% genomic match is wrong.

1. Greenhouse Effect Mechanism: The greenhouse effect is when greenhouse gases in the atmosphere trap heat from the sun, warming the Earth.
2. Analyzing Options:

• Option 1 (Car in Sun): Sunlight enters the car, heat is trapped inside (like greenhouse gases trap heat in Earth's atmosphere).
• Option 2 (Plants in Office): This is about photosynthesis reducing CO₂, not heat trapping.
• Option 3 (Burning Kerosene): This is combustion - based heating, not heat trapping.
• Option 4 (Charcoal Grill): This is combustion for cooking, not heat trapping.

Answer:

The son's genomic DNA would be at least a 50 percent match to his dad's genomic DNA, and there would be no match in the mitochondrial DNA.

Second Question (Greenhouse Effect Analogy)