Solution:
The type of membrane that protects internal organs from friction is known as serous membrane.
It is the transparent liquid that is found in the body cavities. When looking for a direct location, it is mostly found in the heart, lung, and abdominal cavity. Serous fluid acts as a lubricant for organs. By lying within the membrane near the organ, it helps the organ move easily for functioning and reduces stress and friction the organ may have against other organs. The lungs, for example, constantly move to provide air for the body. This fluid allows for this motion and prevents the wear and tear that might occur without serous fluid.
Although serous fluid is important for lubrication, it also can be very harmful to the body. Some diseases cause the serous glands to produce too much serous fluid. As a result is that the membranes that hold the serous fluids are not allowing the organ to move or function properly. This could not only be serious for our lungs but also for our heart that needs to move to supply blood to the body.
This is the required answer.
C. the gene pairs assort independently during meiosis.
Edouard van beneden proposed that an egg and a sperm, each containing half the complement of chromosomes found in somatic cells, fuse to produce a single cell called a zygote.
Zygote
A zygote (from the Ancient Greek zygtós, "joined, yoked," from v (zygoun), "to join, to yoke") is a fertilized egg. [1] is an example of a eukaryotic cell produced by the fertilization of two gametes. The genome of the zygote, which is made up of the DNA from each gamete, has all of the genetic material for a brand-new unique organism.
The zygote represents the earliest developmental stage of multicellular organisms. A zygote is produced when an egg cell and sperm cell combine to form a new, distinct organism, as is the case in humans and the majority of other anisogamous organisms. The zygote can split asexually through mitosis in single-celled organisms to create identical progeny.
To learn more about the zygote refer here:
brainly.com/question/3238975
#SPJ4
Answer:
This question is incomplete, the complete question is:
Two fruit flies that are heterozygous for body color and eye color are crossed. Brown body color is dominant to black body color. Red eye color is dominant to brown eye color. Use the Punnett square to determine the ratio of offspring with: Brown body and red eyes : Brown body and brown eyes : Black body and red eyes : Black body and brown eyes :
The answer is:
Brown body and red eyes : 9
Brown body and brown eyes : 3 Black body and red eyes : 3 Black body and brown eyes : 1
Explanation:
This question is a typical dihybrid cross involving two different genes. One coding for body color and the other for eye color. The allele for Brown body color (B) is dominant to the allele for black body color (b) in the first gene while the allele for Red eye color (R) is dominant to the allele for brown eye color (r) in the second gene.
In a cross between two parents that are heterozygous for the two genes i.e. BbRr × BbRr, each parent will produce the following possible allelic combinations of gametes:
BbRr- BR, Br, bR, and br
Using these gametes in a punnet square (see attached image), 16 possible offsprings will be produced in the ratio 9:3:3:1 where the offsprings and their possible genotypes are;
Brown body and red eyes (B_R_): 9
Brown body and brown eyes (B_rr): 3
Black body and red eyes (bbR_): 3
Black body and brown eyes (bbrr): 1
Just like in humans, radioactive material can damage plant tissues as well as inhibit growth. mutations are possible due to damage caused to the DNA. radioactive material in soil can prevent nutrient from being taken in by plants, causing it to be infertile.
