BIOLOGY HIGH SCHOOL

Suppose that in humans the ability to roll the tongue (R) is dominant to being unable to roll it (r). Having freckles (F) is dominant to having no freckles (f). A freckled tongue-roller could have which genotypess? A. RRFF
B. RrFf
C. rrFF
D. RRFF and RrFf only
E. all of the answer options are correct

Answers

Answer 1
Answer:

RRFF and RrFf

Explanation:

the R and F Will always dominate if present

so rrFF is freckled non tongue roller

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Use the codon chart to convert this sequence into an amino acid: UCU-CGA-GCC-GUU-GGG-UGA
When Jeremy returned home after vacation, he noticed that his new plant had not grown. His mother, a florist, told him that it was because the plant was not getting enough sunlight. He moved his plant closer to the window to get more sunlight. How can Jeremy best support the idea that his plant needs more sunlight? A) Ask his mother to make the plant better. B) Wait and see what happens to the plant. C) Remove the plant from direct sunlight after a week. D) Ask his science teacher at school what she thinks could be the reason.
Trey is looking at a cell under the microscope. It is attached to many other cells, and it has a nucleus and membrane bound organelles. It has no cell wall. In which kingdom should this organism be classified?
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As an infant, Maya had to have part of her brain removed due to a life-threatening medical problem. Eighteen years later she graduated from high school as the valedictorian of her class, was awarded a college scholarship, and showed no deficits as a result of the brain surgery. The fact that her brain was able to adapt and rewire itself following the operation is called ___________________.a) Synaptic Potentiation
b) Trans-Cerebral Restructuring
c) Post-Traumatic Cerebral Malleation
d) Neuroplasticity

Answers

Answer:

D

Explanation:

Brain can create new connection between neurons.

Final answer:

The ability of the brain to adapt and compensate for damage by forming new connections among remaining neurons is called Neuroplasticity. Despite having part of her brain removed as an infant, Maya exhibited this through her high school graduation, scholarship award, and absence of deficits from the surgery.

Explanation:

The ability of Maya's brain to adapt and rewire itself after a part of it was removed is known as Neuroplasticity. The term neuroplasticity refers to the brain's incredible capacity to reorganize itself, developing new connections among remaining neurons when part of it gets damaged or removed, thus minimizing the deficits of such loss.

In Maya's case, she demonstrated impressive neuroplasticity because, despite having part of her brain removed as an infant due to a life-threatening medical problem, she graduated from high school as the valedictorian of her class, was awarded a college scholarship, and showed no deficits as a result of the brain surgery. Hence, it's worthwhile to emphasize the power of neuroplasticity in our amazing brain.

Learn more about Neuroplasticity here:

brainly.com/question/33507376

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Living organisms contain unique chemical elements which are not found in non-living systems

Answers

It is false that living organisms contain unique chemical elements which are not found in non-living systems. 

In their experiment to form a primitive living cell, Urey and Miller set up various flasks with water vapor and the gases CO2, CH4, and H2. One flask also had electrodes to generate spark; another flask had electrodes to generate spark; another flask had everything but electrodes. Which of the flasks showed presence of coacervates, and why?A: only the flask with the electrodes because the electrodes were a source of electricity that simulated lighting.
B: only the flask without electrodes because the electricity generated from electrodes would have destroyed the coacervates.

Answers

The correct answer should be A.only the flask with the electrodes because the electrodes were a source of electricity that simulated lighting.

According to their experiment, only the flask with the electrodes could show presence of coacervates because it needed an energy source in order to fully simulate earth's early atmosphere.

Answer:

The answer is a

Explanation:

How does osmosis explain the fact that a watery syrup forms when you put sugar on strawberries?

Answers


Osmosis is said to be the tendency of a fluid, usually water, to pass through a semi permeable membrane (as of a living cell) into a solution where the solvent concentration is higher thus equalizing the concentrations of materials on either side of the membrane.

When sugar is placed on a straw berry, the thin film of moisture on the berry skin begins to dissolve the sugar. Once this happens, the dissolved sugar forms a higher solute concentration on the skin of the berry than that found in the (plant) cells of  the berry. A concentration gradient is formed and water molecules from the berry cells move down that gradient to the outside of the berry skin and  dissolve the sugar to form a gooey solution.

what fossil evidence indicates that evolutionary change may have occurred within a time frame known as gradualism

Answers

The fossil record ! Hope it helps! 

Answer:

Phylogeny

Explanation:

A human skin cell contains 46 chromosomes. Afrog sperm cell contains 12 chromosomes.
Which pair of numbers shows the chromosome
number of a normal gamete from each of these
species?
(1) human 46; frog 12 (3) human 23; frog 24
(2) human 46; frog 24 (4) human 23; frog 12

Answers

The number of chromosomes for the gamete of each of the species would be half of that of their vegetative cells.

Haploid cells

Haploid cells contain half (n) the number of chromosomes of diploid cells (2n)

Gametes are generally haploid in nature.

The human skin cells are vegetative cells (2n), thus a gamete of humans would have 23 or (46/2) chromosomes.

The frog sperm cell is a gamete cell. Hence, the chromosome number remains 12.

In other words, human gametes will have 23 chromosomes while frog gametes will have 12.

More on haploid cells can be found here:  brainly.com/question/15475325

Answer: Human 23; frog 12

Explanation: Skin cells are somatic cells, that means the they build the body and divide by mitosis. This kind of cells have genetic charge 2n or twice of the gamete's chromosomes, so a human gamete (sperm or ovum) has 23 chromosomes (46/2 = 23).

Frog sperm cell is a gamete so it has the number of chromosomes for this type of cell which is 12
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