Answer:
No, since different genes will exert varying degrees of influence on the trait
Explanation:
The term quantitative heritability refers to the transmission of a phenotypic trait in which expression depends on the additive effect of a series of genes.
Polygenic heritability occurs when a trait results from the interaction of more than one gene. And these genes can also have more than two alleles. The action of many genes and alleles can cause many different combinations that are the reason for genotypic graduation.
Quantitative traits are those that can be measure, such as longitude, weight, eggs laid per female, among others. These characters do not group individuals by any precise and clear categories. Instead, they group individuals in many different categories that depend on how the genes were intercrossed and distributed during meiosis. The result depends on the magnitude in which each allele contributes to the final phenotypeand genotype. When they interact, they create a gradation in phenotypes, according to the level of contribution.
Let us see, for instance, the eye color trait, which results from the interaction of many genes. Two of them significantly contribute to the color green, blue, or brown, while the rest of the involved genes play a role in defining the spectrum of phenotypes of each eye color. So, there are different tones of blue eyes, green eyes, and brown eyes, and the differences are determined by the contribution of each allele to the phenotype.
In polygenic inheritance, multiple genes influence a trait, and theycan have varying degrees of influence rather than having the exact same effect.
In polygenic inheritance, it is not accurate to say that all genes controlling a trait will have exactly the same influence over the trait. Polygenic inheritance involves multiple genes that work together to influence a trait. This means that these genes do not necessarily exert the same degree of influence; rather, they can and often do exert varying degrees of influence on the expression of a trait. For example, in human skin color, a characteristic feature of polygenic inheritance, several genes, each with different levels of influence, contribute to the trait's expression.
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B.) The growth of spines
C.) The presence of toxins in seed casings
D.) The production of resins
Answer: Option A.
The generation of nectar in flowering cactus is not a nonspecific defensive mechanism.
Explanation:
Cactus is a xerophytes that have adaptations to survive in its environment.
Cactus have extrafloral nectaries that produce nectars for pollination.The generation of Cactus nectars is just to attract insects like bees for polloniation and not as nonspecific defensive mechanism.
b. Hydrogen bonds
c. James bonds
d. lonic bonds
Answer:
Hydrogen bonds
Explanation:
Polar molecules are slightly charged (positive or negative). Water is an example of a polar molecule. It has a slightly positive charge toward its hydrogen end, and a slightly negative charge toward its oxygen end. In the water molecule, the hydrogen on one molecule (+) is attracted to the oxygen of a neighboring molecule (-) and thus the two water molecules are kept together. This kind of bond between two molecules is called a hydrogen bond.
Answer:
2) JG cells are present in the vasa recta.
Explanation:
The vasa recta is a web of the blood capillary which supply blood to the medulla region of a kidney due to its high permeability of solutes and water. It runs parallel to the loop of Henle. It does not composed of the juxtaglomerular cells (JG cells). The juxtaglomerular cells (JG cells) present in kidney which synthesise and stores enzyme renin. Thus, option 2) JG cells are present in the vasa recta is not a true statement.
B.B
C.C
D.D
Chloroplast is the site for photosynthesis in plants. Thus, option A is correct.
Chloroplasts are the cell organelles present in the plants. Chloroplasts are one such type of plastids.
Chloroplasts are green in colour. They contain a green coloured pigment called chlorophyll which traps the solar energy.
The solarenergy is converted into chemicalenergy by a process called photosynthesis. The organic molecules so produced are the energyrich compounds.
Chloroplasts are chiefly found in the mesophyll region of the leaves.
Chloroplast consists of grana and stroma regions. The grana contain disc shaped coin like structures called thylakoids. The matrix of chloroplasts constitutes stroma region.
Various enzymes, DNA, ribosomes etc are found within the chloroplasts. Hence, they are also referred as 'cellwithinthecell'.
Chloroplasts have unique feature of self-replication. Chloroplasts are similar in function to mitochondria in animal cells.
Therefore, chloroplasts are important plant structures for photosynthesis.
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In plants, photosynthesis takes place in chloroplasts. Option A is correct.
Plant, algae, and certain protist cells have membrane-bound organelles called chloroplasts.
So, They are in charge of the process known as photosynthesis, which turns light energy into chemical energy in the form of glucose in green plants and some other animals. Life on Earth is supported by this essential mechanism of energy conversion.
Therefore, In plants, photosynthesis takes place in chloroplasts.
Learn more about Chloroplast here : brainly.com/question/1741612
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Answer:
polar means top or south
Explanation:
Answer:
Electron microscopes differ from lightmicroscopes in that they produce an image of a specimen by using a beam of electronsrather than a beam of light. Electrons have much a shorter wavelength than visible light, and this allows electron microscopes to produce higher-resolution images than standard lightmicroscopes.