Answer:
the fundamental unit of heredity
Explanation:
DNA is a double stranded helix structure. Each strand is made up of a string of nucleotides.
A gene is a region of DNA, usually tens of thousands of nucleotides long. At the simplest level, one gene encodes for one trait. Therefore, the gene can be described as the fundamental unit of heredity.
Genes work by coding for specific proteins, which carry out essentially all the functions in the cell.
Answer:
Yes, This can happen if both the parents are heterozygous.
Explanation:
To have a child with blood type O, both the parents should have at least one copy of allele "i". This is required since the genotype of a person with blood type O is "ii". Parents with blood type A and type B can have a child having blood type O. Here, the genotype of the parent with blood type A should by IAi which means that it is heterozygous in nature. Likewise, the parent with blood type B should have genotype IBi.
, is a form of asexual reproduction<span> and cell division </span><span>used by all poekaryotes</span><span> (bacteria and archaebacteria) and some organelles within eukaryotic</span><span> organisms.</span>