True. Otherwise we would never stop growing although broken bones regain cartilage into solid bone when we break one but it doesn’t expand.
Yes, it is possible.
In this case both of the parental plants were heterozygotes and they manifested dominant allele in their phenotype, which is round seed.
P: Aa x Aa
F5: AA, Aa, aA, aa - possible genotypes in fifth generations.
A- dominant allele (round seeds); a- recessive allele (wrinkled seeds)
Wrinkled phenotype is manifested only if there are two recessive alleles present.
Why people shouldn't be sent to Mars?
1. Almost 99% of the mass of the human body is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Only about 0.85% is composed of another five elements: potassium, sulfur, sodium, chlorine, and magnesium.
2. The four most abundant elements in the human body – hydrogen, oxygen, carbon and nitrogen – account for more than 99 per cent of the atoms inside you.
There are 4 main reasons, which we discuss in detail below:
Reduced tolerance for light
Greater sunlight sensitivity between attacks
Longer duration of sun exposure
Exposure to specific wavelengths emitted by sun
People prone to light-induced migraine episodes generally have a lower threshold for light. In fact, the light of an overcast and cloudy day can be enough to cause pain! Thus, even normal levels of light exposure—much less bright days—can lead to headaches and other migraine symptoms.
The tolerance for light can also be lower between attacks making people more sensitive even when they are not in pain. This means a person may not immediately have a headache while outside, but it may be building. And if you just came out of an attack, you may find that your symptoms linger as a result of sun exposure.
If you don’t have an immediate headache or migraine from the sun, experts have further suggested that the cumulative effect of sunlight exposure over time can be just as damaging. Ultimately, the longer you stay outside, the more likely you may develop a headache.
Lastly, the sun emits a spectrum of light wavelengths, one of the strongest of these being high energy visible light or what most people label blue light. In fact, blue light is everywhere—fluorescents, device screens, and other artificial sources as well. And blue light has been repeatedly identified as the most painful color of light for people with migraine. thus the combined effect of sun brightness and these painful wavelengths can be a dynamic duo of unpleasantness.
