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4 years ago

What situation is an example of artifical selection

Biology

1 answer:

ss7ja [257]4 years ago

3 0

Answer:

An example situation of artificial selection is "More African elephants today naturally lack tusks compared to the elephant populations 100 years ago, because big game hunters sought elephants for ivory".

Explanation:

The process of breeding animals to acquire the desired characteristics by the external means other than natural selection and behavior of animal itself is called as artificial selection.

The first artificial selection was carried out by Darwin when he mated penguins that would have a higher chance of breeding.

The practice of artificial selection was existing in human civilization a long time ago.

This process was used to use wild animals and domestic animals in battles and other household works.

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What is endocytosis? What is exocytosis? What human body functions are similar to these processes?

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4 years ago

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What the difference between a sabot slug and rifled slug?.

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Answer:

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3 years ago

In a cattle the allele for short horns

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(S) is dominant over the allele for longhorns (s). Two short-horn cows are bred and produce four offspring.

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3 years ago

: Research coal and natural gas as a source of energy.

scoundrel [369]

Answer:

Its fossil energy non renewable source

Explanation:

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3 years ago

The ant, Myrmecia pilosula, is found in Australia and is named bulldog because of its aggressive behavior. It is particularly in

Inessa [10]

Answer:

The question lacks the illustrative diagram, the diagram has been attached as an image.

The correct answer, according to the picture is A.

Explanation:

All cells undergo division (mitosis or meiosis). Meiosis reduces the chromosomal number of the daughter cells by half. According to the question, The female species of Myrmecia pilosula ant has diploid cells total number of 2 chromosomes.

At the metaphase stage of meiosis I, homologous chromosomes (similar but non-identical chromosomes received from each parent) aligns at the center/equator of the cell called METAPHASE PLATE. This alignment is done when spindle fibres attach to the kinetochores of the chromosomes.

Option A in the diagram depicts this arrangement of homologous chromosomes in the centre of the cell. Note that, each chromosome has replicated to form SISTER chromatids held together at the centromere. These chromosomes will be pulled apart in the next stage (Anaphase).

Option B depicts only one replicated chromosome

Option D depicts separation of sister chromatids (only one chromosome)

Option E depicts separation of sister chromatids of two chromosomes which occurs in the Anaphase of meiosis II

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3 years ago