how much is celebration is produced in one kilogram body a force of 20 Newton makes angle 30 degree with horizontal (u=0.4)

Which best describes the process that the pest population has experienced due to this environmental change?

Mumz [18]

Natural selection is correct

4 0

2 years ago

Need help. Will give brainliest. Answer all these questions.

agasfer [191]

Answer:

1. The daughter cells are genetically identical because they each contain the same diploid chromosome complement as the original parent cell. It can be seen in the stages shown above that mitosis maintains the chromosome number or complement of a cell.

2. Much of the growth in an adult is attributed to the growth plate in the bones, which is line of cells at each end of the bone that divides rapidly during puberty. As the bones elongate, the muscles also elongate as they are stimulated to grow by stretching and hormonal changes. When puberty is completed, the growth plate calcifies into solid bone and can no longer grow. Muscles can continue to enlarge with athletic activities and can sometimes split with excessive force, but muscle cells typically do not continue to divide. Cells such as your skin, hair, and interior mucus surface cells continue to divide because they are in direct contact with things from the outside world. Bone marrow also continually divides to produce red and white blood cells. Many other cells in your body do not continue cell division.

3. The number of Chromosomes stay the same when the cell divides because before a cell divides it produces new copies of the Chromosomes in the nucleus so when division takes place two genetically identical 'daughter cells', containing the same genes, are formed.

4. – in cells capable of dividing, the period between cell divisions is called interphase – cells spend most of their time in interphase because this is the phase where they perform their functions (obtaining energy, synthesizing products, repair damage, fight disease, duplicate their genetic material and get ready for division)

5. Asexual reproduction is a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes. The offspring that arise by asexual reproduction from either unicellular or multicellular organisms inherit the full set of genes of their single parent. Asexual reproduction is the primary form of reproduction for single-celled organisms such as archaea and bacteria. Many eukaryotic organisms including plants, animals, and fungi can also reproduce asexually. In vertebrates, the most common form of asexual reproduction is parthenogenesis which is typically used as an alternative to sexual reproduction in times when reproductive opportunities are limited. While all prokaryotes reproduce without the formation and fusion of gametes, mechanisms for lateral gene transfer such as conjugation, transformation and transduction can be likened to sexual reproduction in the sense of genetic recombination in meiosis.

6. Since each of the parent cell’s chromosomes were replicated during interphase, there are two copies of each chromosome in the cell during prophase. Once the chromatin has condensed into individual chromosomes, the genetically-identical chromosomes come together to form an “X” shape, called sister chromatids .

Explanation:

I hope it helps!!

8 0

3 years ago

Elephant seals are abundant in their population size but they have low genetic diversity within their species due to overhunting

Anastasy [175]

<h2>Genetic diversity </h2>

Explanation:

If the environment changes, the species runs the risk of not having the genetic diversity to be adaptable to that change and could go extinct

Genetic diversity is the diversity or genetic variability within species
The huge variety of different gene sets defines an individual or a whole population's ability to tolerate stress from any given environmental factor
While some individuals might be able to tolerate an increased load of pollutants in their environment, others carrying different genes might suffer from infertility or even die under the exact same environmental conditions;the former will continue to live in the environment the latter will either have to leave it or die
Any change in the environment - natural or human induced causes a selection of events that only the fittest survive
In case of elephant seals,overhunting reduces the sum of genes available,thus leaving behind a population that is less capable of tolerating any further natural or human disturbances in environment
The loss of genetic diversity within a species can result in the loss of useful and desirable traits

8 0

2 years ago

3.

Romashka-Z-Leto [24]

Answer:

b

Explanation:

environmental factors play a very important role in the development of an individual

changes in latitude then lead to adaptation by an individual.....whereas some people who don't study biology still develop.

6 0

2 years ago

Read 2 more answers

Describe the stages of each type of cell reproduction process from a normal patient whose body cells can repair themselves and n

Citrus2011 [14]

The types in which cell divides are:

I. Mitosis: Mitosis is the type of cell division in which the DNA and chromosome number of the daughter cell remains the same as parent cell (2n).

Different stages of mitosis are:

a. Prophase - disappearance of nuclear membrane takes place and chromosome starts to condense.

b. Metaphase - The Chromosome aligns to the equatorial plane and gets attached to the spindle fibre arising from the centrioles through its centromere.

c. Anaphase - The sister chromatids of a chromosome gets separated and starts moving to opposite poles.

d. Telophase - Nuclear membrane reappears and the cells divide.

One example where mitosis takes place is to repair the part of the body where it has got injured.

II. Meiosis: Meiosis is the type of cell reproduction where the daughter cell have half the number of chromosome and DNA content than mother cell. Meiosis takes place in two stages and they are:

i. Meiosis I - It includes following stages:

a. Prophase I - Nuclear membrane disappears and chromosome starts to condense.

b. Metaphase I - The homologous chromosome aligns to the equatorial plane and gets attached to the spindle fibre arising from the centrioles through its centromere.

c. Anaphase I - The homologous chromosome gets separated and starts moving to opposite poles.

d. Telophase I - Nuclear membrane reappears and the cells divide.

Meiosis I leads to the formation of two daughter cells.

ii. Meiosis II - It includes following stages:

a. Prophase II - disappearance of nuclear membrane takes place and chromosome starts to condense

b. Metaphase II - The Chromosome aligns to the equatorial plane and gets attached to the spindle fibre arising from the centrioles through its centromere.

c. Anaphase II - The sister chromatids of a chromosome gets separated and starts moving to opposite poles.

d. Telophase II - Nuclear membrane reappears and the cells divide.

Meiosis II leads to the formation of four daughter cells having haploid number of chromosome.

3 0

3 years ago

how much is celebration is produced in one kilogram body a force of 20 Newton makes angle 30 degree with horizontal (u=0.4)​

how much is celebration is produced in one kilogram body a force of 20 Newton makes angle 30 degree with horizontal (u=0.4)