Answer:
Nn
Explanation:
Tay-Sachs disease is an inheritable genetic disorder that results in the destruction of nerve cells in the brain and spinal cord. It's caused by the absence of an enzyme that helps break down fatty substances called gangliosides. Their buildup results in the destruction of nerve cells.
Tay-Sachs is inherited in an autosomal recessive manner. This means that a person needs to have two recessive alleles (nn) in order to inherit it. Rebecca is a carrier of the disease but isn't actually ill. This means that she has one recessive (n) and one dominant (N) allele. Thus, her genotype is Nn.
Answer:
allows for species to adapt to changing environments
The answer is mitosis. in asexual reproduction, cells go through phases that help the cell divide in two, producing two identical daughter cells.
A. Protects the seed from damage as it travels
protects the seed not only from mechanical stress but also from microorganism invasion
Most chemical digestion takes place in the duodenum<span> by chemicals secreted by the </span>liver<span>, </span>pancreas<span> and </span>small intestine<span>.</span>