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bagirrra123 [75]
3 years ago
8

Which is not characteristics of all mammals?

Biology
1 answer:
alexgriva [62]3 years ago
8 0

Answer:

b. giving birth to live young (viviparous)

Explanation:

Monotremes include duck-billed platypus and few other mammalian species that are oviparous. These mammalian species do not give birth to young ones, that is, they are not viviparous. Rather they lay eggs and are oviparous.

These species are also characterized by the absence of teeth. The primitive monotremes also exhibit external fertilization.

Examples of egg-laying mammals include anteaters or echidnas and the duck-billed platypus. The laid eggs are carried by females in an abdominal ouch to keep them warm.

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Answer:

it is the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water.

Explanation:

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3 years ago
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Two cell divisions mitosis or meiosis
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Cell division is the process by which a parent cell divides into two or more daughter cells.[1]Cell division usually occurs as part of a larger cell cycle. In eukaryotes, there are two distinct types of cell division: a vegetative division, whereby each daughter cell is genetically identical to the parent cell (mitosis),[2] and a reproductive cell division, whereby the number of chromosomes in the daughter cells is reduced by half to produce haploid gametes(meiosis). Meiosis results in four haploid daughter cells by undergoing one round of DNA replication followed by two divisions. Homologous chromosomes are separated in the first division, and sister chromatids are separated in the second division. Both of these cell division cycles are used in the process of sexual reproduction at some point in their life cycle. Both are believed to be present in the last eukaryotic common ancestor.

Prokaryotes (bacteria) undergo a vegetative cell division known as binary fission, where their genetic material is segregated equally into two daughter cells. All cell divisions, regardless of organism, are preceded by a single round of DNA replication.

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3 years ago
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The difference in an area with high concentration and an area with low concentration is called:.
Musya8 [376]

The difference in an area with high concentration and an area with low concentration is called concentration gradient.

<h3>What is concentration gradient?</h3>

Concentration gradient refers to the difference between the concentrations of two solutes in a solution.

A solution usually contains an area or region with higher concentration and an area with lower concentration.

The difference between these two areas of different concentrations is referred to as a concentration gradient.

Learn more about concentration gradient at: brainly.com/question/13050811

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6 0
2 years ago
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Chromosomes are thread-like structures in which DNA is tightly packaged within the nucleus.

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3 years ago
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