<h2>A) is the correct option </h2>
Explanation:
Natural selection is a selection pressure which operates in a population and allow the best fitted genotype to survive in changing environmental conditions and eliminate the other genotype which are not fit
- In the given example of rabbits, those that strictly eat grass will even survive after drought because plants will try to keep themselves green and there will be no production of berries and flowers hence these rabbits will shift their food source to green plants and will be favored
- But those rabbits those that strictly eat berries and flowers will not be able to survive because they were strictly dependent on berries and flowers for their food as a result they will be unfit and natural selection will be against those rabbits
Answer:
The correct answer is B. No jaws. The new species resembles an ostrachodermi.
Explanation:
Ostrachodermi is an extinct class of agnate fishes, considered as the most ancient vertebrate. They were little filtering organisms, with no mandible or jaws, and no paired fins. Their bodies were covered by squama, bony plates, and shields. They used to move in the bottoms when they were feeding on detritus.
(Question 1 points 3)
No. There will be no water flow into or out of the fish without proper homeostatic processes. The body temperature of fish is regulated by the temperature of the water. the fishes only allow the solvent (water) to move across, but not the solutes. A fish is, after all, a collection of fluids floating in a fluid environment.
(Question 2 points 3)
The fish will not experience "bloating" or "dehydration” because in nature all organisms maintain normal conditions through homeostasis. It is the tendency toward a relatively stable equilibrium maintained by physiological processes by the body. Gills of fishes, enzymes help in maintain. Humans drink water in case of dehydration.
(Question 3 points 3)
Fish are the cold-blooded creatures of God. Most of the fishes cannot control their internal body temperature by themselves just like human beings. In order to stay at a normal and a healthy temperature, or to obtain temperature homeostasis, the fish seek warmer or colder water for water retention when they face the excessive water loss.
Answer:
C. Prevents sir pollution
Explanation:
Because when cars a running they produce fumes which pollute our air. Also that is a car electric charger
Answer:
Explanation: 1) Individual who is bald but neither parents has a widow's peak: As having a peak is dominant and the individual is bald with parents that doesn't have the trait, the genotype is recessive, in the case ww;
2) Individual has a widow's peak: The individual's genotype can be WW, homozygous for the trait or Ww, heterozygous for the trait, depending on the genotype of the parents;
3) Individual can't roll their tongue: Being able to roll the tongue is a dominant characteristics, so if the individual can't roll their tongue means the genotype is recessive. But, there is little evidence that this trait is dominant or inheritable;
4) Individual has a widow's peak but their mother does not: In this case, the genotype of the individual is heterozygous (Ww), because the mother is recessive (ww) and the offspring has the trait, so the father must have had it;
5) If an individual does not have a widow's peak (ww), which genotype would be impossible? If this individual crosses over with another individual with the same trait, their children will be all recessive for widow's peak (ww), so there is no possibility of an offspring with the trait;
If the initial individual crosses over with an individual with widow's peak, two possiblities can occur:
- If the crossover is with an individual homozygous for the trait (WW): all their children will have widow's peak with genotype Ww. So, the possibility of not having the peak is 0;
- If the crossover is with an individual heterozygous for the trait (Ww), there will be a probability of 25% for the children to have genotype WW, a probability of 50% for the offspring to be heterozygous (Ww) and has the trait and probability of 25% to be recessive (ww) and therefore doesn't have the trait;
