Independent assortment that promotes genetic variety is a chromosomal assortment and crossing over. Thus, options are -
(A) Crossing over
(D) Random segregation
(E) Independent assortment
During the metaphase stage of meiosis, the chromosomes align in the center, and either the mother's or father's chromosome has an equal chance of being transferred to the daughter's cell. The bigger the number of chromosomes in a karyotype, the greater the likelihood of gamete diversity.
During meiosis, homologous chromosomes cross across, allowing DNA fragments to be exchanged between sister chromatids. This results in variation.
Thus,
(A) Crossing over occurs when homologous chromosomes join up with non-identical twins and swap DNA sections.
(D) The distribution of chromosomes among four gametes is known as random segregation.
(E) Independent assortment entails the separation of a pair's homologous chromosomes into distinct gametes.
To know more about genetic variety refer to:
#SPJ1
Answer:
The correct answer is case-control study.
Explanation:
In a case-control study, two groups of the population are used, in which one group is kept as control, and the other is known as the experimental group that encounters with a specific disease or an outcome. With the help of this study, one can expose the groups to various or single outcomes.
In the given case, a study is done in which an advertisement on a ban on smoking is encouraged by the non-smokers at the alcohol sale points but not by smokers, in the process a random digit dialing method was used. This random digit dialing method is an illustration of a case-control study, in which the survey of the individuals is done regarding the ban on smoking.
Answer:
Based on the information provided, the bone indicated by the arrow is a long bone.
Explanation:
Hello. This question is incomplete. The full question is:
"How does inflammation help the body fight off further infection?
A. Inflammation keeps harmful substances away from healthy cells. B. Inflammation triggers the production of white blood cells. C. Inflammation drops the pH of blood. D. Inflammation raises the pH of blood."
Answer:
A. Inflammation keeps harmful substances away from healthy cells.
Explanation:
Inflammation is a normal reaction of the immune system to an aggression in the body that must be neutralized or eliminated. It can be generated by infections of bacteria, viruses and other parasites, in addition to other factors such as heat, physical trauma and exposure to radiation and irritating chemicals.
Inflammation helps the body fight other infections because it keeps harmful substances away from healthy cells.
The inflammatory process leads the body to produce five classic signs: heat, redness (redness), tumor (swelling, edema), pain and loss of function. Heat and redness are caused by the dilation of the vessels and the increase in local blood flow leads to reddish color. Swelling arises from the release and accumulation of fluids.
Answer:
Immunodeficiency disorders is the answer on edg2020!
The structure of an organism or its part, directly influences its function, which is central to biological adaptation. Adaptation involves developing physical characteristics, which aid survival in specific environments. While analogous structures represent adaptation to similar environments, homologous structures indicate shared ancestry.
Structure and function are fundamentally related to adaptation in biology. Essentially, the shape or structure of an organism, or any of its body parts, directly relates to that part's function or purpose. This idea, called the structure-function relationship, is central to the concept of adaptation—the process by which organisms evolve physical characteristics that help them survive in their environment.
For example, consider the fins of whales and the wings of bats. Even though these animals differ significantly in many aspects, they both developed structures (fins and wings) that perform similar functions (swimming and flying), which are best suited to their specific environment. These analogous structures represent an adaptation to a common environmental condition, despite the lack of a close evolutionary relationship, and is known as convergent evolution.
On the other hand, homologous structures represent a shared ancestry. For instance, the grasping hands of humans and chimpanzees, which serve the same function, indicate a common ancestor. Despite their structural similarities, the ways these structures are used could vary, showcasing how different environmental conditions can drive variations in function and contribute to evolutionary divergence.
A prime example of the structure-function relationship—the hallmark of adaptation—is observed in the various beak shapes of finches. Different shapes serve different purposes or functions, permitting birds to make the best use of available food resources in their respective habitats.
#SPJ6