Recent Attempt

According to the use and disuse theory, an organism’s most frequently used parts change over time. It was Jean Baptist De Lamarck’s idea.

Transporting eggs (or ova) from the ovary to the uterus is the specific function of the oviduct, also referred to as the fallopian tube. It is essential to the reproductive system of females. The oviduct uses its fimbriae, which are finger-like projections at the end of the tube, to catch the egg when it is released from the ovary following ovulation. The oviduct’s walls contain microscopic hair-like structures called cilia, which aid in the egg’s passage through the tube and into the uterus. When there are sperm present, fertilization usually takes place in the oviduct. The resultant zygote, or fertilized egg, starts to divide and develops into a blastocyst if fertilization takes place. The developing embryo is still being transported by the oviduct to the uterus, where implantation can occur.

OPTION A: Polymorphism is the presence of a single species in more than two morphological forms (individual types). OPTION B: Gene linkage is the phenomenon where multiple genes on the same chromosome remain together. OPTION C: The adaptation of an organ or part to fulfill a specific purpose or fit a specific lifestyle is known as specialization. Therefore, choice C is the right one. OPTION D: Replication is the process of copying or reproducing something.

The ampulla is the term for the oviduct’s proximal portion. It is lined with projections that resemble fingers and is the widest section of the oviduct. When the egg is released from the ovary, these projections aid in catching it. Here, fertilization takes place when the sperm and egg come into contact.

A homozygote’s phenotype can be either dominant or recessive, either AA or aa. Therefore, our response and statement D are wrong.

The resulting ratio is 2:1, or 12 red to 6 white. By crossing two F1 generations, the expected ratio can be computed: Bb x Bb will result in BB; Bb; Bb; bb. The ratio is 3:1 as a result.

Nephrons in the descending loop of Henle reabsorb the majority of the water. As a result, the salt concentration is highest in the ascending loop of Henle. Most of the dissolved components required by the body, especially glucose, amino acids, and sodium bicarbonate, have been reabsorbed into the blood from the solution of salt, urea, and other substances that was passed along by the proximal convoluted tubule and enters the loop of Henle. The loop of Henle’s thick ascending limb is where sodium is reabsorbed.

White Matter: White matter is made up of myelinated nerve fibers, which function as the “wires” that carry messages from one area of the brain to another and between the nervous system. In order to facilitate communication between different parts of the central nervous system, it contains axons of neurons that connect and relay information between different parts of the brain.

Down syndrome is characterized by trisomy 21, or the presence of three chromosomes at the twenty-first pair.

Option A is the right response. Lamarckism is an evolutionary theory founded on the idea that physical changes that occur in organisms during their lifetimes—such as the development of an organ or a part due to increased use—can be passed on to their progeny.