Answer:
b. it involves a physical exchange of segments from homologous chramosomes.
Explanation:
Crossing is a phenomenon involving homologous chromatids. It consists of the breaking of these chromatids at certain points, followed by an exchange of corresponding pieces between them.
Exchanges cause new gene sequences to appear along the chromosomes. Thus, if on a chromosome there are several genes combined in a certain sequence, after the occurrence of crossing the combination may no longer be the same. So when thinking about crossing, it is common to analyze what would happen, for example, about the combination of the allele genes "A" and "a" and "B" and "b" in the pair of homologues.
Answer:
Biased.
Explanation:
Anecdotal evidence is described as the evidence that is based entirely upon an individual's personal experiences or observations.
As per the question, a claim based on such evidence is most likely to be <u>biased</u> as anecdotal evidence is based on a limited selection of examples that either support or refute the claim but not supported by any scientific or statistical analysis. Due to this undue bias, <u><em>anecdotal evidence is not considered reliable as it displays the personal opinion, feeling, or experience of an individual</em></u>. Thus, <em>it may be used to negate the general statements but not to support r substantiate a claim or argument</em>.
Answer:
Option A
Explanation:
As we all know, energy can never be created . Also it can never be destroyed. However, it can only be changed from one form to the other. In this case, when a pool ball is striked by a stick, the kinetic energy of stick is transferred to the ball along with release of sound. Sound is just another form of energy.
Now, when this ball strikes other balls, the same process is repeated i.e the ball strikes another ball and passes on its kinetic energy along with release of sound energy. Every time sound is released, the amount of kinetic energy transferring from one body to other reduces.
Option A is correct
Positive impacts of genetic engineering:
• New products are created such as food with higher nutrition values, drugs that are more effective and safer
• Disease prevention (“correcting” the genetic mutation, or removing disease-causing gene)
Negative impacts of genetic engineering:
• irreversible side effects, for example resistance of bacteria or introduction of viruses in human cells
• abusing like change specific traits that are not connected with diseases, create human outcomes that are ethically questionable.
Carrot i would say is the answer.
