True because the surface of the water table may vary due to seasonal change
Answer:
D
Explanation:
Chromosomal rearrangements are no more likely to occur in mammals than other vertebrates
Translocations and inversions can be extremely deleterious, for example, if the break point is within a gene, that gene would be dysfunctional, or a new harmful fusion gene could be created
Rearrangements are not more likely to occur in mitosis than meiosis
A homozygous deletion for a gene means none of that gene product will be made. If this product is important, this could cause problems for that individual. An individual that is homozygous for a duplication still has a copy of the gene, so while they may face some problems owing to the overexpression of the gene, it is more likely that not having the gene at all will be more problematic (depending on the gene of course!)
Answer:
Father - AO
Mother - AO
Baby - OO
Explanation:
This question involves blood type in humans where blood types A and B are dominant over blood type O, but A and B codominant. In this blood group system:
- Genotypes AA and AO are phenotypically type A
- Genotypes BB and BO are type B
- Genotype AB is type AB
- Genotype OO is type O
According to this question, a man with type A blood marries a woman with type A blood. They have their first child as type O blood. This means that both parents of this child are heterozygous type A i.e. AO and AO. This is the only way the parents can have a child with type O (genotype OO). Hence,
Father - AO
Mother - AO
Baby - OO
Answer: Receptors would be unable to return to their inactive form and respond to new signals.
Explanation:
Many signaling pathway involves the regulation of the protein synthesis. It involves the turning off or on of some of the specific genes present in the nucleus. If the receptors become unable to resume to the inactive form the may not be able to produce new signals during protein synthesis. The final activated molecule in a signal pathway may not function as transcription factor.
