The correct answer is A. Homologous chromosomes with heterozygous alleles.
If the alleles of genes are different then the scientist is observing for homologous chromosomes with heterozygous alleles.
In each homologous pair there is one chromosome which comes from maternal chromosome and the other one from paternal chromosome.
Homologous chromosomes are not identical but they are similar. Alleles for each homologous chromosome is not same but genes are the same.
Answer;
-Frontal lobes
Explanation;
-Frontal lobe is one of four paired lobes in the brain's cerebral cortex, and it plays vital roles in memory, attention, motivation, and numerous other daily tasks. It is located near the front of the head, under the frontal skull bones and near the forehead.
-The frontal lobe is the part of the brain that controls important cognitive skills in humans, such as emotional expression, problem solving, memory, language, judgment, and sexual behaviors.
An example of natural immunity is a fetus acquiring maternal igg to the chickenpox virus across the placenta. Option D
<h3>What is natural immunity?</h3>
The term natural immunity refers to the ability of the body to defend itself from invaders which are pathogenic. There are two kinds of natural immunity which are;
- Active immunity
- Passive immunity
Since natural immunity could be due to a person's immune system or may be gotten from another person, it follows that an example of natural immunity is a fetus acquiring maternal igg to the chickenpox virus across the placenta. Option D
Learn more about immunity:brainly.com/question/19975865
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Answer:
Interferon beta-1a intramuscular injection is used to treat adults with various forms of multiple sclerosis (MS; a disease in which the nerves do not function properly and people may experience weakness, numbness, loss of muscle coordination, and problems with vision, speech, and bladder control
