Why is the process of DNA replication essential to a cells<br> preparation for division?

An individual that is heterozygous for two linked genes has the genotype a b/a b, which means that the aand b alleles are in one

mylen [45]

The recombinat types are AB, and ab.
Genetic recombination involves the production of offspring with combinations of traits that differ from those found in either parent. In our case the parents are Ab and aB, which is not the same as the offsprings (AB,ab). During meiosis in eukaryotes, recombination involves the pairing of the homologous chromosomes a process.

5 0

3 years ago

Most of the energy in the United States comes from:

Grace [21]

Solar power/energy or hydroelectric plants

8 0

3 years ago

In the disease myasthenia gravis, the human body makes-by mistake- antibodies to its own acetylcholine receptor molecules. These

andre [41]

Answer:

Muscle contraction function.

Explanation:

The nerve endings possess synaptic acetylcholine vesicles ready to be released. The action potential depolarizes the presynaptic terminal and increases the concentration of axoplasmic calcium; Acetylcholine molecules are thus released, so that the concentration of the neurotransmitter at postsynaptic (nicotinic) receptors is temporarily increased. This is followed by post-synaptic membrane depolarization, muscle membrane action potential with increased rnioplasmic calcium concentration, and finally muscle contraction. Acetylcholine is hydrolyzed by acetylcholinesterase and resynaptic at the presynaptic level by cholinecetyltransferase. The etiopathogenesis of myasthenia gravis is autoimmune and there are antibodies against acetylcholine receptors that circulate in the blood, as well as a decrease in the number of receptors on the motor plates, that is, it is produced by the postsynaptic blockage of the myoneural plaque, that generates fatigue and localized or generalized muscle weakness that is characterized by the worsening of the contractile force of the muscle.

6 0

3 years ago

The stage of mitosis where the chromosomes line up at the equator

diamong [38]

The stage of mitosis where the chromosomes line up is called metaphase.

4 0

3 years ago

Pls pls pls help. I will give BRAINIEST

erma4kov [3.2K]

Answer:

A

Ametrine containing amethyst and citrine, from Bolivia

Abelsonite

Abenakiite-(Ce)

Abernathyite

Abhurite

Abramovite

Althausite

Althupite

Altisite

Alum-(K)

Aluminite

Aluminium

Alunite

Alunogen

Amakinite

Amarantite

Amblygonite

Ameghinite

Amesite

Amicite

Amphibole (mineral group)

Analcime (analcite)

Anandite

Anapaite

Anatase

Ancylite (mineral group)

Andalusite

Andersonite

Andesine

Andorite (IV/VI)

Andradite

Andyrobertsite

Anglesite

Anhydrite

Ankerite

Annabergite

Annite

Anorthite

Anorthoclase

Antarcticite

Anthonyite

Anthophyllite

Antigorite

Antimony

Antitaenite

Antlerite

Apachite

Apatite (mineral group)

Aphthitalite

Apophyllite

Aragonite

Arcanite

Archerite

Arctite

Arcubisite

Ardaite

Arfvedsonite

Argentite

Argutite

Argyrodite

Armalcolite

Arsenic

Arseniosiderite

Arsenoclasite

Arsenolite

Arsenopyrite

Arthurite

Artinite

Artroeite

Ashburtonite

Ashoverite

Asisite

Astrophyllite

Atacamite

Athabascaite

Atheneite

Aubertite

Augelite

Augite

Aurichalcite

Auricupride

Aurostibite

Austinite

Autunite

Avicennite

Avogadrite

Awaruite

Axinite (mineral group)

Azurite

Varieties that are not valid species:

Adamantine spar (variety of corundum)

Agate (variety of chalcedony and quartz)

Alabaster (variety of gypsum)

Alexandrite (variety of chrysoberyl)

Allingite (synonym of amber)

Alum

Amazonite (variety of microcline)

Amethyst (purple variety of quartz)

Ametrine (variety of quartz)

Ammolite (organic; also a gemstone)

Amosite (asbestiform grunerite)

Antozonite (variety of fluorite)

Anyolite (metamorphic rock - zoisite, ruby, and hornblende)

Aquamarine (light blue variety of beryl)

Argentite (high temperature form of acanthite)

Asbestos (fibrous serpentine- or amphibole minerals)

Auerlite (variety of thorite)

Avalite (chromian variety of illite)

Aventurine (variety of quartz)

3 0

3 years ago

Why is the process of DNA replication essential to a cells preparation for division?