They could discover which organisms are closely related to the mammoth, and which one is the most closely related.
The right answer is 3. Spruce.
Sexual reproduction has the advantage of producing genetic diversity in the offspring (as we see it for example in humans) due to the crossing of two gametes of two different individuals as well as the genetic recombination that occur before fertilization.
Of the four propoitions, only one reproduces sexually, and that is the spruce.
The spruce is part of the genus Picea which includes conifers comprising about fifty species.
Answer:
tertiary; quaternary
Explanation:
The orientation of all the atoms of a protein in three dimensions represents its tertiary structure. It includes the folding of the polypeptide chains in a way that brings are far apart amino acids of its secondary structure close together. Various segments of a polypeptide chain interact to form tertiary structures and these segments are held together by different kinds of weak interactions.
However, disulfide cross-links between the segments of polypeptide chains also stabilize the tertiary structure of some proteins. Likewise, disulfide bonds also hold the protein subunits of some proteins together and thereby, contribute to the quaternary structure. For example, two light chains of an antibody are joined together by disulfide bonds.
Answer:
<em>The correct option is A. mitospore</em>
Explanation:
A mitospore can be described as a haploid or diploid spore. Generally, a spore is formed by meiosis but under certain conditions it can form by the process of mitosis and is known as mitospore.
When spores are formed by sexual methods, meiosis occurs. When they are formed by asexual methods, mitosis occurs. Asexually, there are different ways by which mitospores form by mitosis.
