The woman with ptosis and her father have the genotype Pp, while her mother has pp. If she marries a man with normal eyelids (pp), there is a 50% chance that their children will inherit the dominant P allele and have ptosis.
The subject here is centered around genetics, specifically, a dominant genetic disorder called ptosis. The woman with ptosis would have a genotype of Pp, because she inherited one ptosis allele (P, for dominant) from her father and one normal allele (p, for recessive) from her mother. Hence, her father's genotype was also Pp, and her mother's was pp.
If the woman marries a man with normal eyelids (genotype pp), each child would have a 0.5 (or 50%) probability of inheriting the dominant P allele from the mother and thus, having ptosis. This is because each child will get a p allele from the father (since he can provide only that), and either a P or p allele from the mother with the probabilities being 50% for each. Hence, for these offspring, their potential genotypes can be Pp (ptosis) or pp (normal).
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O2) Layer A - Layer D - Layer B - Layer C
O 3) Layer D - Layer C - Layer B - Layer A
4) Layer D - Layer A - Layer C - Layer B
Answer:
D-C-B-A
Explanation:
Oldest crust on the bottom
a. vaporization
b. freezing
c. boiling
d. melting
Answer:
The correct answer is: The action potentials peak at a higher voltage than in the body.
Explanation:
Nerve cells in the human body have a very low sodium concentration inside them, while the liquid that surrounds them is rich in this particular ion. When sodium channels in the neuron's plasma membrane are opened, this big difference in sodium concentration -also called gradient- produces a big influx of sodium ions. This rapid entering of Na+ generates a change in the voltage of the cell, because sodium is positively-charged, meaning that the inside of the neuron will become less negative - this is commonly called depolarization of the membrane. Action potentials are generated because of the sudden spike in voltage, but for them to occur, there's a certain voltage that needs to be achieved, so not every depolarization will produce an action potential.
The fact that the cell in the lab is surrounded by a lower concentration of sodium means that the influx of Na+ ions will be lower, because the gradient won't be as big, but also means that the action potential will peak at a higher voltage because the resting membrane potential wasn't as negative to begin with.
B. When a pregnant woman is in labor, the body releases hormones that increase the intensity of contractions, which then increases the secretion of the same hormones.
C. When blood sugar concentration is above normal, the endocrine system releases hormones that lower the blood sugar concentration until it reaches a normal level, and the release of the hormones slows.
D. When a person is jogging, the body releases hormones that continually decrease the rate of oxygen supply to the legs.
ANSWER is A
When blood sugar concentration is too low, the endocrine system secretes hormones that increase blood sugar concentration to a normal level.
Explanation:
to not have a fever response when infected. People thatare
homozygous for the other allele (H), instead, show an
extremeresponse, and body temperature rises high. In heterozygotes
bodytemperate rises to a moderate level. Fitness values of the
threegenotypes are as follows:
LL LH HH
0.9 1 0.8
What will be the gene frequencies of the next generation?
Answer:
LL.=.8
LH= .9
HH= .7
Explanation:
Please see attachment
b. Are a prominent structure in prokaryotic cells.
c. Possess their own DNA.
d. Are sites of ATP production.
Answer:
Option (a), (c) and (d).
Explanation:
The prokaryotes lacks the nucleus and the membrane bound organelles. Eukaryotes have well defined nucleus and the endomembrane system is present in eukaryotes.
The main site of the oxidative phosphorylation is the mitochondria in case of eukaryotes. The mitochondria are known as semi autonomous organelle as it contains its genetic material. As the oxidative phosphorylation occurs in mitochondria, this is the main site of ATP production. The mitochondria is a membrane bound organelle and absent in case of prokaryotes.
Thus, the correct answer is option (a), (c) and (d).
Answer:
The correct answer are
a. Are the sites of oxidative phosphorylation.
c. Possess their own DNA and
d. Are sites of ATP production.
Explanation:
Mitochondria are double membranous structures that are found in eukaryotes. These are structure present in almost all the eukaryotes. The process of aerobic respiration takes place in mitochondria.
Mitochondria have their own DNA which is smaller than nuclear DNA and are circular in shape like bacterial DNA.It is called the powerhouse of the cell because ATP synthesis takes place in mitochondria which provide energy to the cell.
The ATP is produced through the process of oxidative phosphorylation which occurs in the matrix and mitochondrial membrane. In oxidative phosphorylation, ATP is produced by energy released from the oxidation of NADH and FADH₂ molecules.
Therefore the correct answer is a,c, and d.