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kozerog [31]
3 years ago
7

Please help me! BRAINLIST IF ANSWER!!!! Thank you :)

Biology
2 answers:
lorasvet [3.4K]3 years ago
7 0

Answer:

because they have thing they both like and when they not twins then the have a lot more differnces

Explanation:

mestny [16]3 years ago
3 0

Answer:

because they stem from same egg and sperm cells

Explanation:

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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
Select all that apply.
professor190 [17]

The right answer is B and C.

For proposal C, I will give you an example, that of an autosomal recessive disease. If a parent is heterozygous for an allele causing an autosomal recessive disease (due to a mutation), it may be that it transmits the allele to its descendence, as it may not be able to transmit it (since in one heterozygous subject, not all of its gametes carry the mutated allele) and thus the mutation will no longer be copied through the generaitons.

Each individual is genetically unique. Its genes are distributed along chromosomes contained in the nucleus. Mutations can lead to the appearance of different versions of genes: alleles. A diploid individual has two copies of each gene, which may be identical or different alleles. Mixing during sexual reproduction partly explains the genetic diversity of individuals.

4 0
3 years ago
Read 2 more answers
What are the intercellular communication types at a synapse? Select all that apply.
Anettt [7]

Answer: Option A and D.

Soups chemical synaptic transmission.

Sparks direct electrical transmission.

Explanation:

Intercellular communication refers to the communication and interaction that exists between two cells in the body. It could be hormonal or synaptic transmission.

Synapse is the site where electric nerve impulses are transmitted between two nerve impulses.

There are two synapse possibilities which are electrical and chemical.

The Sparks and soups mean that the scientific discovery over the transmission of nerve impulses as to whether they are electrical impulses (Sparks) or chemical impulses(soup).

Chemical synaptic transmission means there is no physical touch in the space chemical are released and move to the neighbouring cells.

Electrical transmission means neuron physically touch and give way for flow of impulses between cells.

6 0
2 years ago
The organic molecules known as phospholipids are key components of cell membranes and composed of which molecules?
Rudik [331]
Glycerol and fatty acids are the organic molecules

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8 0
2 years ago
Which two of these characteristics are shared by the planets Uranus and Neptune?
faltersainse [42]

Answer:

 Some of the similarities between the planet Uranus and Neptune are:

  • Both the planets have many similarities in their internal structures.
  • The internal structure of both the planets is made up of water, ammonia gas and methane gas.
  • Both Uranus and Neptune have an Earth- sized solid center.
  • The atmosphere of both the planets comprises of the gases, hydrogen, helium and methane.
  • Due to the presence of methane gas, both the planet Uranus and Neptune have the same blue colour.

8 0
2 years ago
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