1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Cerrena [4.2K]
3 years ago
14

What is chromosomes

Biology
2 answers:
vovikov84 [41]3 years ago
7 0

A chromosome is a Deoxyribonucleic acid molecule with part or all of the genetic material of an organism.

Lerok [7]3 years ago
4 0

Answer:

Chromosome is the compact form of genetic material(DNA) present in the nucleus of a cell. These chromosomes are a combination of proteins and DNA. These chromosomes carry our hereditary material in the form of genes.

Each chromosomes carry many genes which are transferred to the next generation. Each chromosome divides into the S- phase and they become compact during the mitosis phase.  

Chromosomes can be seen under the microscope in the metaphase stage of cell cycle. 23 pairs of chromosomes are present in each cell out of which 22 are autosomes and 23rd is the sex chromosome.  

These sex chromosomes is different in both male and female because females have two X chromosomes and male have one X and one Y chromosome as sex chromosome.

You might be interested in
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
How do salmon that escape predators still nourish life?
Rudik [331]

Answer:

by hiding and never getting seen and staying cautious

Explanation:

4 0
3 years ago
Protein synthesis consumes four high-energy phosphate bonds per added amino acid. Transcription consumes two high energy phospha
SVEN [57.7K]

Answer:

30 protein molecules per mRNA molecule

Explanation:

In this problem, it is necessary to have into account that the transcriptional process requires six (6) phosphate bonds to synthesize one (1) codon (i.e, each three nucleotides), and also discards 95% more energy to make mRNA, it means 19 times this amount of energy >> 6 x 19 = 114 bonds. In consequence, transcription requires 120 phosphate bonds (6 + 114 = 120), while translation requires four (4) phosphate bonds per codon. From this deduction, it is possible to find the number of protein molecules synthesized with regard to the energy cost of the translation process and the transcriptional process >>> 120 bonds (transcription) /4 bonds (translation) = 30 protein molecules.

7 0
3 years ago
N
Margaret [11]

Answer:

Four hydrogen nuclei join to form a helium nucleus, two neutrinos, and energy.

Hope this help

6 0
3 years ago
the condition marfan syndrome results from the production of abnormal elastin, the main component of elstic fibers. predict the
valina [46]

Protein elastin is used to made elastic fiber, component of connective tissue that found abundant in blood vessels, bones, tendon and skin. The effect should be prominent in those organs.

Aorta is the biggest artery blood vessels and it need more elasticity to withstand the pressure of the ventricle. Less elasticity makes aorta become enlarged. The bone will lose density and become thinner. The tendon in heart valve will be weaken and might cause the heart valve disease. The skin will lose elasticity, so it will be easier to stretch.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Please help me out here
    10·1 answer
  • If a decision was made to drain wetlands for agricultural reasons, which statement is false?
    7·2 answers
  • Ingested dietary substances must cross cell membranes to be used by the body, a process known as Ingested dietary substances mus
    7·1 answer
  • Which of the graphics best represents an animal cell <br><br>A <br><br>B
    11·2 answers
  • Some vertibrets maintain their body temperature by breaking down food to water enegry. Sunlight or nutrients
    5·1 answer
  • Which of the following choices lists the steps of pathogenesis in the correct order?
    6·1 answer
  • The____groups related species
    11·1 answer
  • . A gene for skin color can mutate into a dominant allele that prevents the synthesis of pigment, causing albinism. You examine
    6·1 answer
  • Which of the following statements about the dark reactions is true? a. Dark reactions occur in the thylakoids of chloroplasts. b
    15·2 answers
  • Question 2
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!