Letters A through F on the graph below represent different species that are related but show different structural, functional,
and behavioral adaptations.
Increasing Level
of Complexity
more
Time (millions of years)
One inference that can be drawn from the graph is that
A) speciation may be either gradual or abrupt.
B) speciation occurs only gradually, over long periods of time.
C) species E is the ancestor of species F.
D) species E resulted from the extinction of species A, B, C, and D.
Answers
A) speciation may be either gradual or abrupt.
Related Questions
Perennial plants in the genus Asclepias (milkweeds) contain compounds called cardiac glucosides (cardenolides) that can be toxic for animals. Monarch butterfly larvae feed on Asciepias sp. but are not harmed by the cardenolides. Instead these molecules accumulate in the tissues of the caterpillar and are present in the tissues of the adult butterfly. Because of these toxins in their tissues, Monarch butterflies are unpalatable to insectivorous birds. Another species of butterfly, the Viceroy, looks very similar to the Monarch in its bright coloration and distinctive patterning but was thought to lack a toxin. Because Monarch butterflies are toxic it was long thought that the similar appearance of nontoxic Viceroy butterflies was an example of:
Answers
Answer:
Batesian mimicry
Explanation:
Batesian mimicry refers to a form of biological resemblance by which a harmless prey species evolved in order to imitate another harmful species for a common predator, thereby increasing its chances of survival. This defensive behavior was described by Henry W. Bates, who made ecological observations of butterflies in the Brazilian rainforest. Thus, an innocuous species that show harmful signals against a predator will gain protection against this predator. Batesian mimicry is a type of mimicry that benefits from the predator's learned avoidance behavior.
¿Cuál es la cantidad mínima recomendable de ingesta de agua al día para conservar el equilibrio de las funciones del cuerpo humano? *
Answers
Answer:
se recomienda tomar un litro de agua por cada 35 kilogramos de peso corporal
Explanation:
El agua es un componente fundamental para llevar a cabo todas las funciones celulares. Algunas de las funciones más importantes que requieren agua son, por ejemplo, la eliminación de desechos (orina y heces), mantenimiento de la temperatura corporal alrededor de 35,5 °C (trasnpiración), protección de órganos internos, lubricación de las articulaciones durante tareas de locomoción (movimiento), etc. Durante la jornada, el organismo pierde grandes cantidades de agua mediante los procesos de respiración, transpiración, en la orina y heces. En consecuencia, la reserva de agua que posee el cuerpo humano debe ser recuperada mediante una ingesta adecuada. La Organización Mundial de la Salud (OMS) recomienda ingerir a diario un litro de agua por cada 35 kilogramos de pesos. Es importante resaltar que estas cantidades pueden variar dependiendo de las características físico/fisiológicas del individuo (por ejemplo, edad, práctica deportiva, etc.), como así también de las características ambientales donde se desarrolla el individuo (por ejemplo, un clima tropical puede aumentar los requerimientos diarios).
Which of the following best describes genes?
a: polymers of peptides used to make proteins
b: nucleotide sequences in dna that code for traits
c: pieces of rna that produce carbohydrates
d: collections of nucleic acids that generate energy
Answers
Answer:
b: nucleotide sequences in dna that code for traits
If you use a microscope to view an unknown cell, what structure should you look for to tell you if it is a eukaryotic cell?
A Cell membrane
B Cytoplasm
C DNA
D) Nucleus
Answers
Answer:
If you use a microscope to view an unknown cell, should you look for a nucleus option D.) to tell you if it is a eukaryotic cell
Explanation:
What is the main difference between the two parts of protein synthesis?
A. The first builds RNAs and the second builds proteins
B. The first happens in the presence of oxygen and the second is anaerobic
C. The first requires the input of energy from the cell and the second is passive
D. The first take place in the cytoplasm and the second takes place in the nucleus
Answers
Answer:
A
Explanation:
transcription creates mRNA, while translation builds proteins
In the process of protein synthesis, the first builds RNAs and the second builds proteins. The correct option is A.
What is protein synthesis?Cells create proteins through a process known as protein synthesis. Transcription and translation take place simultaneously.
The conversion of genetic information from DNA to mRNA in the nucleus is known as transcription. Initiation, elongation, and termination are its three stages.
Creating a polypeptide, or protein consisting of a chain of amino acids, is the sole goal of protein synthesis. Keratin, a protein, is produced in the cells of the hair follicle.
In the first stage, messenger RNA (mRNA) is created. After leaving the nucleus, mRNA moves into the cytoplasm and joins a ribosome.
At this time, the second stage of translation starts, during which a specific protein molecule is created by reading the genetic instructions contained in the mRNA molecule.
Thus, the correct option is A.
For more details regarding protein synthesis, visit:
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which part of the dna molecule is considered the genetic code that will be read by the cell? phosphates, Deoxyribose sugars, enzymes, nitrogen bases (A,C,G, and T) Plzz help ASAP
Answers
Answer:
A,C,G
Explanation:
I hope I answered this question right