The answer is letter A.
Lightning is a contributor of the world's total Atmospheric Nitrogen Fixation, and is important for ogranisms dependent on the nitrogen cycle.
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Answer:
The gardener performed hybrid crossing and the purple plant's genotype is: PP
Explanation:
- Since we know the offspring's phenotype (appearance) is purple, the genotype can either be PP or Pp.
- We know that the farmer crossed a white plant, we can denote it's genotype as pp and a purple plant with a dominant trait.
- Because the farmer crossed the white plant with the purple plant, this tells us that the genotype of the purple plant must be PP.
Steps:
1. Do a punett square (Bb= heterozygous)
B b
B
b
2. The outcomes would be BB, Bb, Bb, and bb
3. Your answer would be 50% since there are 2 that are heterozygous and 4 total outcomes. 2/4=1/2=50%
Answer:
The partial pressure of oxygen determines the affinity of hemoglobin for oxygen. Red blood cells have the shape of a flattened disk, generating a broad surface area for the diffusion of oxygen. Since their only purpose is carrying oxygen throughout the body, they lack many typical cell structures, including a nucleus.
Explanation:
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Answer:
As the new coronavirus continues to spread around the globe, researchers say the virus is changing its genetic makeup slightly. But does that mean it is becoming more dangerous to humans? And what would the impact be on any future vaccines?