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uranmaximum [27]
3 years ago
6

Which adaptation below is a structural adaptation? A. Lions care for their young. B. Zebras form a herd and watch for predators.

C. A bird builds a nest. D. A deer has flat teeth for chewing plants.
Biology
1 answer:
Marina86 [1]3 years ago
5 0

Answer:

D. A deer has flat teeth for chewing plants.

Explanation:

Adaptation, which is the ability of an organism to survive changes in its natural environment, can either be structural, behavioral and physiological. Structural adaptation is the possession of a physical or structural feature by an organism to enable it survive or adjust to change.

According to this question, the FLAT TEETH possessed by the deer for chewing plants is an example of structural adaptation because the deer posseses a structural feature (flat teeth) that allows it to feed on plants for survival.

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The zygote is said to be Choose... , because it is able to develop into any kind of cell in the body. Adult stem cells are refer
Sindrei [870]

Answer:

The correct answer is -

1. totipotent

2 multipotent

3. pluripotent

Explanation:

The cells that are able to develop or differentiate a different kind of cells in the body of the individual are known as totipotent cells and this ability is known as totipotency. An example of such cells is found in the zygote.

Multipotent on the other hand are the cells that are able to develop into a specific kind of cell of tissues these cells are present and the example of this type of cell is adult stem cells. Whereas Embryonic stem cells are Pluripotent cells that are characterized as the cells that develop into any type of cell of the body of an organism.

6 0
2 years ago
GIVING 20 POINTS! Which is a goal of the Human Genome Project? to identify the 3 billion genes that comprise the human genome?
GrogVix [38]
The main goal of the human genome project is to identify the 3 billion genes that comprise the human genome. Hence the correct answer is option A.
8 0
3 years ago
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An antibiotic was effective 20 years ago against a specific type of a specific type of bacterial infection no longer works again
Sliva [168]

c. Resistant bacteria have survived and reproduced at a greater rate than nonresistant bacteria

Explanation:

The antibiotic is no longer effective as it was 20 years ago because the resistant bacterial have survived and reproduced at a greater rate than the non-resistant bacteria.

  • The antibiotics have specifically designed to exterminate the disease causing bacteria strain from the body.
  • While at that point in time, it is potent and does the work. Along the line, it will cause the structures of some other strains to change.
  • This will lead to the development of resistant breeds with time.
  • The resistant breed will then be able to survive the onslaught of the antibiotics making it not a good fit.

Learn more:

Selective force brainly.com/question/4602376

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4 0
3 years ago
If you have an 81 for your 9 weeks grade but make a 70 on your exam whats going to be your final grade?
Sloan [31]
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5 0
2 years ago
Read each of the sentences that describe a phase of meiosis. Place each sentence into the correct box.
Allushta [10]

Answer:

prophase 1(Homologous chromosomes pair to form a tetrad.

prophase 1(Crossing-over may occur between the non-sister chromatids).

Metaphase 1 (Homologous chromosomes line up at the center of the cell.)

Anaphase 1 (Homologous pairs separate and move towards opposite ends of the cell)

Telophase 1 (A nuclear membrane forms and cytokinesis follows).

Metaphase 2 ( The haploid number of duplicated chromosomes line up at the metaphase plate.

Anaphase 2 (Sister chromatids separate and become daughter chromosomes that move to the poles)

Meiosis 2: Four haploid daughter cells are formed that are not genetically identical.

Explanation:

Meiosis is a type of cell division that gives rise to gametes ( offsprings). This type of cell division occurs only in the reproductive organs. A diploid cell has two sets of chromosomes: one from the female parent and the other one from the male parent. When the diploid cell undergoes meiosis, the chromosome replicate once and the nucleus and cell duplicate twice giving rise to four haploid gamete cells.

The phases of meiosis occurs in two step divisions. Homologous pairs separate during the first round cell division which occurs in MEIOSIS 1 while the sister chromatids separate in the second nuclear division called MEIOSIS 2.

In each round of division, cells go through four stages: PROPHASE, METAPHASE, ANAPHASE, and TELOPHASE. The specific events that occur in these stages are already listed in the above answer.

Generally, at the start of meiosis, each member of a homologous pair of chromosomes, which are made up of two chromatids, moves to lie side by side. While they are thus paired, genetic material is exchanged between the chromatids. This is known as CROSSING OVER.

When the nucleus divides for the first time, the chromosomes in a given pair( not the chromatids) separate and move to opposite ends of the cell. This results in only half the number of chromosomes going to each daughter cell.

During the second nuclear division, the chromatids separate and move to opposite ends of each daughter cell giving rise to four gamete cells, each with a haploid number of chromosomes.

7 0
2 years ago
Read 2 more answers
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