What are the phases of meiosis? ( full explanation and in order )

Answers

Answer 1

Answer: Interphase: -the cell replicates its chromosomes -each chromosome has two sister chromatids held together by a centromere Prophase 1 chromosomes coil up and a spindle forms -homologous chromosomes come together matched gene by gene forming a tetrad -Crossing Over may occur when chromatids exchange genetic material -this occurs two or three times per pair of homologous chromosomes -Crossing Over results in new combinations of alleles on a chromosomes Metaphase 1: -the centromere of each chromosome becomes attached to a spindle fiber -the spindle fibers pull the tetrads to the equator of the spindle -homologous chromosomes are lined up side by side as tetrads Anaphase 1: -homologous chromosomes separate and move to opposite ends of the cell -centromeres do not split -this ensures that each new cell will receive only one chromosome from each homologous pair Telophase 1: -the spindle breaks down and the chromosomes uncoil -the cytoplasm divides to yield two new cells -each cell has half the genetic information of the original cell because it has only one homologous chromosome from each pair Prophase II- -a spindle forms in each of the two new cells and the fibers attach to the chromosomes Metaphase II- -the chromosomes are pulled to the center of the cell and line up randomly at the equator Anaphase II- -the centromere of each chromosome splits the sister chromatids separate and move to opposite poles Telophase II nuclei re form the spindles break down the cytoplasm divides identical to mitosis (Meiosis II) What Meiosis produces four haploid sex cells from one original diploid cell each haploid cell contains one chromosome from each homologous pair haploid cells will become gametes transmitting genes to offspring

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At what rate is a person's metabolism expected to drop for each decade lived

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Answer:

3-5%

Explanation:

A-P-E-X

Answer: 3-5%. I hope you find all your apex answers lol ;)

The mental process of actively and skillfully conceptualizing, applying, analyzing, synthesizing, and evaluating information to reach an answer or conclusion is called __________.

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Critical thinking is the term defined as the mental process of actively and skillfully conceptualizing, applying, analyzing, synthesizing, and evaluating information to reach an answer or conclusion.

Answer:

D. CRITICAL THINKING

Explanation:

EDGE2022

Dmitri Mendeleev and Henry Moseley developed their periodic tables about forty years apart. During that time, many discoveries in chemistry were made. Which fact was most likely discovered between the time of Mendeleev’s table and the time of Moseley’s table that helped Moseley develop his version? a. Atomic mass is the average mass of different samples of the same element. b. Different elements can have similar chemical properties even if their atomic masses are different. c. The number of protons in an atom is different than the atom’s total mass. d. Protons strongly affect an element’s atomic mass, while the electrons in atoms do not.

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The fact that most likely discovered between the time of Mendeleev’s table and the time of Moseley’s table helped Moseley develop his version is as follows:

The number of protons in an atom is different than the atom’s total mass.

Thus, the correct option is C.

What is Mendeleev's periodic table?

Mendeleev's periodic table may be defined as a systematic positioning of elements on the basis of their increasing atomic mass in a table form. It also reflects similarities and fashion in the behavior of elements.

Mendeleev's periodic table helped Moseley to a major extent. All the drawbacks of Mendeleev's periodic table are shorted out by Moseley in a more efficient way.

One of them was that the number of protons in an atom is different than the atom’s total mass because the total atomic mass of an element depends on the number of protons, neutrons, and electrons. Altogether they constitute the element.

Therefore, the correct option for this question is C.

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Answer: The number of protons in an atom is different than the atom’s total mass.

Explanation: I had the test and got the answer correctly.

A grown tiger began its life as a single fertilized egg. Explain why a tiger looks so much different as an adult than it did as a single fertilized egg

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A tiger looks so much different as an adult than it did as a single fertilized egg because it developed through different stages from being a zygote (fertilized egg), to becoming an embryo (where it experiences intense cellular changes), to becoming a fetus (where it gains a great measure of cell specialization, and develops distinct tissues and organ systems). After birth, the tiger still undergoes further growth and development into adulthood. This is largely regulated by the expression of different genes at different times and also by environmental factors.

A tiger looks differently from the way it looked as a single cell because the cells split and make new cells, causing the life form to grow in size. Along with these cells come more genes, each varying due to purpose. To think, that a fully grown tiger started as a single cell, and is now much larger.

Some types of aquatic frogsbury themselves in the mud and spend the winter hibernating at the bottom of the lakes and ponds which characteristic of life does this represents

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Answer:

this represents response to the environment

Which of the following organisms lives near the surface of aquatic biomes because it needs sunlight to survive?a. phytoplankton
b. zooplankton
c. sturgeon
d. manatee

Answers

The organisms that live near the surface of aquatic biomes because it needs sunlight to survive are known as Phytoplanktons. Thus, the correct option for this question is A.

What is Biome?

A Biome may be defined as a very large ecosystem that is running in nature in an unmanaged way. In a more simple sense, it is a very large area that is characterized by a particular type of vegetation. Examples of biomes may include tropical rainforests, coral reefs, grasslands, etc.

Phytoplankton may be defined as the producers of aquatic habitats. These organisms need sunlight in order to perform photosynthesis and synthesize their own food. That is why phytoplanktons live near the surface of aquatic biomes. They are autotrophic in nature.

Therefore, phytoplanktons are organisms that live near the surface of aquatic biomes because it needs sunlight to survive. Thus, the correct option for this question is A.

To learn more about Phytoplanktons, refer to the link:

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Answer:

The correct answer is a. phytoplankton.

Phytoplankton is derived from Greek words "phyto" meaning "plant" and "plankton" meaning "made to drift or wander". Hence, these are plant like microscopic organisms that live in large water bodies.

Like plants, they also contain chlorophyll which enable them to capture sunlight and perform photosynthesis.

In contrast, zooplankton (zoo meaning animal like and plankton meaning made to wander) are heterotrophic in nature which consume phytoplankton and other smaller zooplankton.

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