Answer: B. Earth's present-day species evolved from older, identical species.
The evolution is the change or modification in the characteristics of a species over genration due to the process of adaptation and natural selection. The statement "Earth's present day species evolved from older, identical species is true about evolution". As, proposed by Darwin evolution is "descent with modification", which means that in a process of evolution species change and give rise to new species over generation. He proposed that newly evolved life forms can be traced back to their common ancestor.
All the populations of organisms living close enough together for potential interaction make up a community!
It basically allows them to see what time period it is from or from where it is from (they predict from the age). It also allows them to arrange geological events more accurately depending on where the rock was found.
Answer:
The correct answer is 35 percent.
Explanation:
Allele D produced tiny ears, and allele d produces normal ones. If a heterozygous male with Dd mates with the homozygous female with dd, then generally, the expected offspring produced will be 50 percent with tiny ears, and 50 percent with normal ears.
However, in the given case, the penetrance is 70 percent. Thus, the probability of the offspring with tiny ears will be:
Penetrance = 70 %
Probability = 70 % of 50 % of 100
= 70/100 * 50/100 * 100
= 35 %
Hence, the probability of the offspring with tiny ears is 35%.
Answer:
C) commensalism
Explanation:
Commensalism is an interaction in which one organism benefits without causing any harm to the other. The other organism derives no benefit from the relationship.
The scenario above in which the dwarf mistletoe obtains nutrients from the vascular tissues of trees is a perfect example of such a relationship.
Parasitism is similar to this but the other organism is harmed in the process.
