A mutation in the HBB gene can cause the formation of haemoglobin S (HbS) which leads to sickle cell disease. So, in this case the mutation is harmful. On the other hand, people who are heterozygous for the mutant allele are resistant to malaria and in this case mutation is beneficial.
A mutation in EYC3 gene is neutral, because the change of eye color is either beneficial or harmful.
A mutation in CFTR gene is harmful, because malformed CFTR protein can't perform its key function in the cell. As a result, the balance of Cl and fluids is disrupted, causing mucus in various organs to become thick and sticky.
A mutation in LRP5 causes high bone mass and consequently, many bone density related diseases. So, this mutation is harmful.
The statement "ice floats on water" is considered science because ice is less dense than water. The molecules in ice are less compact, they aren't as close together as waters which makes the water more dense, the solid ice's molecules are bonded together, making them stay a solid instead of a liquid, like water.
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B. Algae don't have accessory photosynthetic organs. Even bacteria
which don't have chloroplasts use chlorophyll in their cell membranes.
Chlorophyll a, b, and c are simply different colors. The body surface
shouldn't affect it too much. </span>
Your diet has to supply 9 of the amino acids and your body can manufacture the rest
Answer: Option C) About one-half will be green and one-half white since that is the distribution of the genes in the parents
Explanation:
- Let the recessive trait (white) for inability to produce chlorophyll be "cc"
- Let heterozygous plant be "Cc"
So, two heterozygous plants self pollinated means Cc X Cc
Cc seperate to yield two alleles "C" and "c"
So, the cross of both:
"C", "c" X "C", "c"
Seeds will be CC, CC, cc and cc
From the crossing, the seed phenotypes are 50% green with "CC", and 50% white with "cc".
Thus, about one-half will be green and one-half white.
