Explanation:
To swim, they move their tails up and down, rather than back and forth as fishes do. This is because whales evolved from walking land mammals whose backbones did not naturally bend side to side, but up and down. ... Whales do the same thing as they swim, showing their ancient terrestrial heritage.
Cetaceans are fully aquatic marine mammals belonging to the order Artiodactyla, and branched off from other artiodactyls around 50 mya (million years ago). Cetaceans are thought to have evolved during the Eocene or earlier, sharing a closest common ancestor with hippopotamuses.
Incomplete dominance produces a new heterozygous phenotype such as the purple color in this example
B.
The Radio-ulna and digits of most primates and animals represents a homologous structure
An example of another internal structure is the genes.
The homologous chromosomes have the same genes in common. Each cell has at least two sets of chromosomes which one comes from one’s father also called as paternal chromosome and mother, called as the maternal chromosomes. These chromosomes are what makes the child obtain the characters and may depend on the traits the parents possess. Homologous chromosomes are not duplicated chromosomes or identical however, they are analogous or similar. The alleles for a specific characteristics isn’t the same but the same genes are in the same order.<span> </span>
➜ <u>Oxyhaemoglobin</u>.
➜ <u>Carboxyhaemoglobin</u> and as carbonic acid (CO2 dissolved in blood plasma).
The correct answer for the question that is being presented above is this one: "B. vine tendrils growing around a fence." Plants exhibit different types of responses to events that occur in the environment. vine tendrils growing around a fence is an example of a nastic response.
The correct answer for the question that is being presented above is this one: "<span>cell elongation"</span>
