Answer:
Sickle cell anemia is an autosomal recessive disorder. For the trait to occur, both of the alleles in an individual should be recessive. Parents who both have sickle cell anemia will have 100% results for their children to carry the disease. The results can be depicted from the following punnet square:
s s
s ss ss
s ss ss
The results will be interpreted by the nurse as having 100% chance for the parents to have the child born with sickle cell as both the parents carry the disease which is autosomal recessive.
B. It is a small pilot study on non-AWAR species.
C. It is a teaching activity that uses students' personally owned dogs and cats.
D. There are no circumstances in which animal work may begin before IACUC approval.
Answer: the correct option is D (There are no circumstances in which animal work may begin before IACUC approval)
Explanation:
The IACUC known as Institutional Animal Care and Use Committees is a local working group that research facilities must appoint in accordance with the Animal Welfare Act , Policy on Human Care and Use of Laboratory Animals. It was introduced to research system by the U.S. government in 1986. The policy protects all warm-blooded animals except rats, mice, and birds bred for research. For an institution to use a specie that is covered by the policy, it must obtain their approval before work begins. I hope this helps. Thanks.
B: the macula and otoliths in the vestibule
C: Nociceptors in the muscles and joints
D: The crista ampullaris in the semicircular canals.
Answer:
A: stretch receptors in the muscles, tendons and ligaments
Explanation:
Proprioception (or kinesthesia) is defined as any postural, positional information transmitted to the central nervous system by stretch receptors in the muscles, tendons and ligaments, joints or skin. In other words, it is the awareness of the movements produced by our members.
These receptors are found within the somatic nervous system, responsible for the different sensory experiences received and interpreted by our body. The most basic function of receptors is to provide the central nervous system (CNS) with information about the internal conditions of organic structures and the external environment.
B.) The growth of spines
C.) The presence of toxins in seed casings
D.) The production of resins
Answer: Option A.
The generation of nectar in flowering cactus is not a nonspecific defensive mechanism.
Explanation:
Cactus is a xerophytes that have adaptations to survive in its environment.
Cactus have extrafloral nectaries that produce nectars for pollination.The generation of Cactus nectars is just to attract insects like bees for polloniation and not as nonspecific defensive mechanism.
Mutations give rise to variability
Giraffes' necks got longer over time
Traits can be passed from parent to offspring
Accumulated changes in an individual are passed on to its offspring
All species evolve over time
Accumulated changes in an individual are passed on to its offspring is the argument of Lamarck's theory of evolution which was incorrect and is option D.
Wisemen discarded the above-mentioned statement and gave the concept of germ cells and somatic cells. Also, he conducted an experiment in which he removed the tails of rats for 22 continuous generations, but it was noticed that the rats of the 23rd generation were still born with a tail.
This proved that the changes were occurring in somatic cells which are not responsible for changes in the offspring. The actual changes in the offspring are due to mutations occurring in the germ cells, so Lamarck's theory was discarded.
To learn more about Lamarck's Theory: