Answer:
Darwin proposed the theory of natural selection to explain the process of evolution. According to Darwin’s theory of natural selection, all organisms have the potential to reproduce limitlessly irrespective of the fact that each species maintain a constant density over time. However, the struggle for existence, i.e. the competition among individuals for available resources to survive and reproduce, put a check on species density (D) and maintains it at a constant level (B). Survival of fittest is unequal ability of individuals to survive and reproduce based on suitability of their inherited characters to prevailing environmental conditions (A). It imparts the reproductive advantage to certain organisms which account for major part of the gene pool of the species. Thus, natural selection favors the individual with survival and/or reproductive advantage over others under existing environmental condition (E). Thus, the correct answer is option C.
Answer:
C
Explanation:
Becuase fom a vaccine you are recieving antibodies by another animal or human donor.
D is unlinkely since it describes how the mother is nursing the baby, so nothing directly mentioning of the baby recieving any antibodies. The other options also talk about how the body creates its own antibodies, which isn't passive immunity.
Answer: Mutation
Explanation: Mutation is a change in DNA sequence, it may occur due to error when the DNA is copied or it can arise from various environmental factors such as exposure to chemicals, UV radiation, Highly infectious microbes.
Mutation maybe spontaneous. Acquired mutations occur at some point in a person's life and are present only in certain cells, not in every cell in the body while some may target a tissue, an organ or an entire system.
When a yeast cell undergoes fermentation it produces ethyl alcohol, lactic acid and oxygen gas .
When the parents have recessive genetic disorder with the genotype gg, there are 100% chances that their second child will develop the disorder.
Genotype is the genetic makeup of an individual. It tells about the set of alleles a person exhibits for a particular trait. Recessive genetic disorder is an autosomal kind of disorder in which both the alleles inherited from the parents should be recessive. Sickle cell disease is an example of recessive genetic disorder.
When both parents are recessive for a trait, only one type of gamete is formed that can give rise to offspring with only the homozygous recessive trait.
To know more about recessive genetic disorder, here
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