The question is incomplete as it does not have the options-
a. superfluous organ
b. extra appendage
c. vestigial structure
d. living fossil
e. chromosomal aberration.
Answer:
The correct answer will be option-vestigial structure
Explanation:
Vestigial structure are the structures which do not play any role in the organisms but still are inherited from the ancestors to maintain the fitness of the organisms.
Vestigial organs are found in many organisms including humans in which the presence of vermiform appendix do not play any role but it used to play roles in the ancestors of humans as they carried the cellulose-degrading bacteria.
Thus, a vestigial structure is the correct answer.
Cross: AA × aa
F1 Progeny: Aa , Aa, Aa, Aa
Now, F1 Cross: Aa × aa
Progeny = Aa, Aa, aa, aa
Phenotypic ratio would be: (Agouti to smooth-haired) = (1:1)
Hope this helps!
Asexual reproduction produces individuals that are genetically identical to the parent plant. The methods of asexual reproduction include: budding, grafting and cutting.
Sexual reproduction in plants produces individuals that only share some characteristics with the parents, but are not genetically the same. This is done primarily through pollination and fertilization.
Hard water is not considered a health hazard. However, it has been stated by the National Research Council that hard drinking water usually donates a small amount towards entire magnesium and calcium in the human dietary requirements.
They further state that in some of the cases, where dissolved magnesium and calcium are very large, water could be a prime contributor of magnesium and calcium to the diet. However, very high hardness, that is, above 300 ppm that is not usual of drinking water arising from surface water, may be related to the higher threat of kidney stones and cardiovascular diseases.
In the majority of the cases of kidney stones, the blood in the body of human being, due to some kind of inherent issues, begins to absorb more calcium from water and food that is in the real sense required. As a consequence, the extra amount of calcium gets deposited on the walls of the kidneys in the process of excretion.
Answer:
Herbaceous or Woody stems.
Explanation:
Citrus belongs to Rutaceae family it is a genus of shrubs and flowering trees (feature of angiosperm plants) Plants which belongs to this genus produce citrus fruits like grapefruits, lemons, oranges, limes etc.
These plants are large shrubs, and 5-15 m tall trees with woody stems, alternatively arranged leaves with an entire margin and spiny shoots. Flowers are small in size each are 2-4 cm in diameter with numerous stamens and five petals, rarely four petals are present. Their leaves and flowers are very strong in scent.
