Weight is a quantitative trait and mice with defective leptin tend to have problems controlling weight since this gene is associated with it.
<h3>What is a quantitative trait?</h3>
A quantitative trait is a phenotypic feature controlled by many genes and the interaction with the environmental factors.
Weight, height, behavioral features are all examples of quantitative traits because these types of phenotypic features show continuous variation.
Quantitative traits are modulated by gene interactions and therefore exhibit both epistatic and pleiotropic effects.
The leptin gene is a gene in mammal involved in neuronal control to metabolic signals and thereby it is associated with weight.
In conclusion, weight is a quantitative trait and mice with a defective form of the leptin gene tend to have problems controlling weight because it is associated with this trait.
Learn more about quantitative traits here:
brainly.com/question/88535
#SPJ1
Answer: Phenotype
Explanation:
Phenotype refers to the total physically observable feature of an organism. it include hair color, height, body size etc
The basic components of a mature mammary gland are thealveoli<span> (hollow cavities, a few millimeters large) lined with milk-secreting cuboidal cells and surrounded by myoepithelial cells. These </span>alveoli<span> join to form groups known as </span>lobules. Eachlobule<span> has a lactiferous duct that drains into openings in the</span>nipple<span>.
Hope it helps u
</span>
Answer:
A. It contains fewer volatile gases.
Explanation:
Mafic lava have a composition of about 45-55% silica with high amount of Fe, Mg, Ca.
The silica content is quite low compared to those of granitic magma whose silica content can reach up to about 60%.
What determines the viscosity of magma is basically the silica content of the magma and the temperature of the magma. Viscosity is the resistance to flow.
The higher the silica content, the lower the viscosity and the higher the amount of volatile gases. Such type of magma is the granitic magma. Granitic magma due to their viscosity flows slowly.
The lower the silica content, the higher the viscosity and the lesser the presence of volatile gases in them. Such an example is Mafic magma. Mafic magma flows very slowly with low amount of dissolved gases.
Answer: (D) Only cell B forms a cell plate during cytokinesis.
Explanation: The “cell cycle” describes the process that cells go through, from their “birth” as new daughter cells, until they themselves are ready to split and become “parent cells” to two new daughter cells. The formation of the cell plate takes place during the mitotic phase.
