The answer is Hox Genes. Just took the exam.
The mammoth is the most commonly known animal that lived during the Ice Age but is extinct today.
This might help: https://www.livescience.com/51793-extinct-ice-age-megafauna.html
Climate change is the variation in the climatic factors and attributes like temperature and weather conditions of a region that can result in warming, ice melts, acidification etc.
Species cannot adapt fast enough to survive the change in their environment.
<h3>What is natural selection?</h3>
- Natural selection is the biological process of selecting the fit organism with better traits and qualities compared to another.
- It is a mechanism of evolution that help organisms to adapt to altered conditions and makes them more likely to survive in the conditions.
- Due to rapid climate change, the organisms are not able to adapt to the altered conditions.
Therefore, option C. is the correct option.
Learn more about climate change and natural selection here:
brainly.com/question/26144932
Answer B: I just took the test
Answer:
In the given case, the two scientists are working on a barley plant, independently determined a short plant mutation, and thus, created homozygous recessive lines of short plants. The measurements of the normal tall plants' height in comparison to the mutant short plants were performed carefully, which showed that the two mutant lines were having similar height.
In order to test whether these two mutant lines are carrying mutation of similar genes or of the distinct genes, complementation test is performed. In the test, it was found that the tall nature is dominant over the short. The complementation test takes place when the two strains of the organism exhibiting different homozygous recessive mutations generate the same phenotype, which is mutant and is also generating the wild type offspring when mated or crossed because of recessive mutation.
Complementation will take place only when there is a mutation in different genes. In the given case because of the wild type offspring, a complementation test will take place showing mutation of distinct genes. When the two strains are identical, there will be no generation of wild-type offspring because of which complementation test will not take place.
