Options for the question have not been given. They are as follows:
A) 1/8
B) 3/4
C) 1/16
D) 1/2
Answer:
D) 1/2
Explanation:
Let the allele for extra digits be represented by D. Since it is a dominant trait, DD and Dd will result in extra digits whereas dd will result in normal number of digits. The woman has normal number of digits so she has dd genotype. The man has extra digits so he can be either DD or Dd.
The couple's first child has normal number of digits so she has dd genotype. She has obtained one d allele from her mother and another d allele from her father. Hence, the man's genotype is Dd.
Man = Dd
Woman = dd
Their children :
D d
d Dd dd
d Dd dd
Half of the progeny will have Dd genotype and will have extra digits. Other half will have dd genotype and will have normal number of digits. So, the probability of their next child to have extra digits is 1/2.
Answer:
This is an English Language question and I need to choose the most appropriate option.
The answer is Option E
Explanation:
Option A is incorrect because 'each of which' is supposed to be followed by a singular verb 'is' and not 'are'. 'When' is used incorrectly here.
Option B is incorrect because 'which' is not introducing an meaningful non-defining clause in the statement. It is referring to the shark's jaws. The first two clauses are not connected to 'which'.
Option C is incorrect. 'Each one of which are ready' should be 'each one of which is ready'. It is also referring to the shark's jaw.
Option D is Incorrect. The use of a present continuous verb 'lying' is incorrect. The first clause also has not meaning.
Option E is correct.
Answer:
The membrane that covers the lungs is called the pleura :)
Explanation:
Answer:
1. Transmits impulse from sensory to motor neuron within central nervous system. Interneuron (d)
2. Transmits impulse out of the brain or spinal cord to effectors (muscle and glands). Motor -efferent- neuron (f)
3. Transmits impulse into brain or spinal cords from receptors. Sensory -afferent- neuron (h)
4. Myelin-forming neuroglia in brain and spinal cord. Oligodendrocyte (g)
5. Phagocitic neuroglia. Microglia (e)
6. Structure capable of responding to motor impulse. Effector (a)
7. Specialized mass of neuron cell bodies outside the brain or spinal cord. Ganglion (c)
8. Cells that line cavities of the brain and secrete cerebrospinal fluid. Ependymal cells (b)
Explanation:
<em>These are structures related to nerve tissue and the functions of the central and peripheral nervous systems.</em>
- <u>Interneuron</u>: are the communications that are established between neurons, consisting of a synapse between one axon of one neuron and the dendrites of another. They allow to relate a stimulus received by the central nervous system (CNS) and the response that is sent to the peripheral nervous system.
- <u>Motor -efferent- neuron</u>: efferent neurons are those that drive the response elaborated by the CNS -in the form of a nervous impulse- towards the effectors
- <u>Sensory -afferent- neuron</u>: conducts information captured by receptors at the periphery to the CNS.
- <u>Oligodendrocyte</u>: cells capable of providing a protective covering to the neuronal axons that make up the nerves, in addition to constituting the support for these structures.
- <u>Microglia</u>: a type of glial cell with immunological and protective function, which has within its functions the phagocytosis of foreign and potentially harmful elements.
- <u>Effector</u>: structure capable of receiving an efferent nervous impulse and carrying out a specific action, such as movement in the muscles or the secretion of hormones in the glands.
- <u>Ganglion</u>: it is the set of neuronal bodies (soma) that are outside the CNS, constituting intermediate points of the path of a nerve, with the function of linking sensitive neuronal axons.
- <u>Ependymal cells</u>: specialized cells of the glia that line the inside of the cerebral ventricles and the spinal cord duct and produce cerebrospinal fluid.
