A challenge to traditional (pre-1860) ideas about species came from embryology, when it was discovered that embryos of dissimilar organisms, such as sharks and humans, resemble each other. Embryology involves the study of the formation and the development of an embryo and the fetus. It is one type of evidence of evolution such that the embryos of many different kinds of animals, mammals, reptiles, birds, fish among others, are similar showing a common ancestry.
<span>A point mutation that results in the substitution of one amino acid for another within a protein is a missense mutation.
</span>This type of mutation<span> is a change in one DNA base pair that results in the substitution of one amino acid for another in the protein made by a </span>gene<span>. </span>
In semiconservative DNA replication, each new double helix that will form will have 1 polynucleotide strand that is from the old DNA molecule and is an Old or Parent strand, and will have a polynucleotide strand from the newly synthesized one, the new DNA strand.
Answer: D. a genetic bottleneck
Explanation:
A genetic bottleneck also known as a population bottleneck is one that describes a sharp reduction in the size of a population caused by environmental events like in the above or caused by human activities.
In biotechnology, the process of introducing the foreing DNA into a cell by a virus is called transduction.Gene therapy is one of the purposes of this process.