Answer:
Both parents are heterozygous for the trait. They must be carriers of the recessive gene that codes for blue eyes.
Explanation:
Let us assume that the dominant gene codes for brown eyes while the recessive gene codes for blue eyes. We can suggest that both parents are carriers of the recessive gene. They both express brown eyes because they also have a dominant gene that codes for brown. Clark inherited one recessive allele from each parent, so he expresses blue eyes. The couple has a 75% probability of getting a brown-eyed child, while the probability of getting a blue-eyed child is 25%.
Answer:
The structure and shape of a skeleton gives the body shape and the ability to move if relevant structures are in place, such as; tendons, muscles and ligaments
Explanation:
Cell theory was given by Schleiden and Schwann in the year of 1839 which gave a basic idea about the cells and its relationships with an organism. The research on plants were done by Schleiden and on animals were done by Schwann.
<h3><u>Explanation:</u></h3>
Theodor Schwann was a German physiologist and physician who made different contributions in the field of science. His discovery of Schwann cells on neurons, the pepsin enzyme in stomach as well as the cell theory are worth remembering. Theodor Schwann did his research on animals and saw that the animal bodies are made up of different cells and their products just like plants. So on 1839, along with Matthias Schleiden, he gave the cell theory which stated that all the living organisms are formed of one or more cells and they are the structural and functional units of living organisms. In 1950s Rudolf Virchow added that cells do arise from pre-existing cells only.
Answer:
Classical conditioning (also known as Pavlovian or respondent conditioning) is learning through association and was discovered by Pavlov, a Russian physiologist. In simple terms, two stimuli are linked together to produce a new learned response in a person or animal.
The most famous example of classical conditioning was Pavlov's experiment with dogs, who salivated in response to a bell tone. Pavlov showed that when a bell was sounded each time the dog was fed, the dog learned to associate the sound with the presentation of the food.
John Watson proposed that the process of classical conditioning (based on Pavlov’s observations) was able to explain all aspects of human psychology.
Everything from speech to emotional responses was simply patterns of stimulus and response. Watson denied completely the existence of the mind or consciousness. Watson believed that all individual differences in behavior were due to different experiences of learning. He famously said:
Explanation: