The skin acts as a barrier for protecting the body from the harmful things such as sun rays, moisture, cold.
<u>Explanation:</u>
Skin plays an important role in regulating body temperature. It helps to prevent harmful substances enter into our body, and does not allow to loss water in our body. Its form the barrier that prevents harmful substances and microorganisms enter in our body.
Our skin is the protecting layers and against loss of water and blood from our body. Its help us to maintain the constant body temperature. The important role of the skin us to protect our body from the ultraviolet rays.
Answer choices:
- A frame shift mutation in the X chromosome of a cheek cell
- A chromosomal mutation in the Y chromosome of a kidney cell
- A point mutation in the first chromosome of a sperm cell
- A substitution mutation in the third chromosome of a uterus cell
Answers:
A point mutation in the first chromosome of a sperm cell
Explanation:
Only mutations that affect the germ line are passed on to the next generation. Therefore, only mutations in the egg and sperm of an individual have the potential to affect the next generation.
Mutations in cheek cells, kidney cells, and uterus cells might cause cell death or cancer. This genetic material is not passed on to the next generation, only the egg and sperm contribute this material. Therefore, only mutations here will affect the generation.
The correct option is A.
The DNA from one specie differ from the DNA of another specie on the basis of their base ratio. The base ratio refers to the percentage of purine to pyrimidine in a DNA molecule. The base ratio is the one that is responsible for the variability that is observed in chromosomes from different species.
Answer:
the answer is b I got it right on my test B
Many of our sensations, aspirations, and emotions, as per Freud, are suppressed or held out of consciousness because they are just too scary.
<h3>What are dreams?</h3>
A dream is a stream of pictures, ideas, emotions, and pleasures that occur automatically in the mind during various phases of sleep.
Freud felt that these latent wants and wishes may potentially be revealed through dreams and slips of the tongue.
Many of our sensations, aspirations, and emotions, as per Freud, are suppressed or held out of consciousness because they are just too scary.
Thus, the theorist who believed the unconscious rises to the surface through dreams is Freud.
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