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3 years ago

As early as the 9th century, it was suggested when organisms change, they may be better ____________.

Biology

2 answers:

zalisa [80]3 years ago

6 0

1. Adapt to Survive 2.Lamark 3.Malthus

lord [1]3 years ago

5 0

Answer:

As early as the 9th century, it was suggested when organisms change, they may be better adapting to survive.

Explanation:

Natural selection, also called Survival of the Fittest, is the process in which the environment influences the fitness of species: <u>organisms that change to adapt better to the conditions they live in, have longer lives and reproduce to leave offspring with the same positive traits</u>.

Two very important people in the development of Evolution Theory are Lamarck (he came up with the theory of acquired characteristics) and Darwin (applied the 'survival of the fittest' to every organism on Earth).

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Match the following.

valkas [14]

Answer:

1 . The stage on the first meiotic division when the homologous chromosomes move to opposite poles but the sister chromatids remain together

: b. Anaphase I

2 . The stage in the second meiotic division where sister chromatids migrate to opposite poles

: c. Anaphase II

3 . A structure on the chromosome that holds a pair of chromatids together during replication

: f. centromere

4 . A double-stranded chromosome following replication attached by a centromere

: d. chromatid

5 . A condition where non-sister chromatid of homologous chromosomes exchange genes

: e. crossing over

6 . The stage in the first meiotic division where the homologous chromosomes line up as a pair

: a. Metaphase I

7 . The stage in the second meiotic division where the chromatid pair lines up at the equator of the cell: g. Metaphase II

Explanation:

DNA replication occurs during the S phase of the interphase of the cell cycle. The replicated DNA molecules are accommodated in two sister chromatids of a chromosome that are held together by a centromere.

During prophase I, the chromatids of a homologous chromosome pair exchange a genetic segment. This process is called crossing over. It generates recombinant chromatids with new combinations of genes.

Metaphase I of meiosis I includes the alignment of homologous pairs of chromosomes at the cell's equator. This is followed by separation and movement of homologous chromosomes to the opposite poles of the cell during anaphase I.

Metaphase II of meiosis II includes the alignment of individual chromosomes, each with two sister chromatids, on the cell's equator. During anaphase II, splitting centromere separates the sister chromatids which then move to the opposite poles of the cell.

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4 years ago

The dilatation of blood vessels allowing the passage of fluid, antibodies, and wbcs into the infected body area is known as?

Nikitich [7]

The dilatation of blood vessels allowing the passage of fluid, antibodies, and WBCs into theinfected body area is known asvasodilation

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2 years ago

Which type of primary brain tumor usually arises in the walls of the fourth ventricle in children and in the lateral ventricles

larisa86 [58]

Answer:

Primitive neuroectodermal tumor (PNET)

Explanation:

They usually occur in early childhood but may become symptomatic in adult life. In children, they commonly occur in or near a spinal fluid sac known as the fourth ventricle and are called medulloblastomas.

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2 years ago

What most likely happens if water flows through a permeable soil layer and reaches a clay layer?

sattari [20]

Answer:

It pools on top of the clay layer.

6 0

3 years ago

Read 2 more answers

What is the biggest sigle factor in environmental science today A POLLUTION BRAPID HUMAN POPULATION GROWTH C URBANIZATION D GLOB

Georgia [21]

I think either rapid of human population growth or global warming

6 0

3 years ago