3 years ago

What is a system? And what is an ecosystem?

Biology

1 answer:

Nataliya [291]3 years ago

3 0

Ecosystem: a biological community of interacting organisms and their physical environment.

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5. Dieting often leads to weight gain.<br> True<br> False

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the answer is false. Dieting usually leads to weight loss.

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3 years ago

When one magnesium atom and two chlorine atoms transfer electrons, magnesium loses two electrons, and each chlorine gains

bezimeni [28]

Answer:

The formation of magnesium chloride, MgCl2, is another example of ionic bonding. When magnesium reacts with chlorine, a magnesium atom loses two electrons and becomes a positively charged ion, Mg2+. At the same time, two chlorine atoms gain one electron each and become negatively charged chloride ions, Cl−.

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3 years ago

A botanist crosses two pink-flowered plants. The cross involves alleles that were not clearly dominant or recessive and could ma

AURORKA [14]

Answer:

Explanation:

According to the information in this question, a gene coding for flower color in a plant is involved. The allele for red color (R) is incompletely dominant over the allele for white color (r) to form an intermediate phenotype/color i.e. Pink that is heterozygous (Rr) for the gene.

If two pink plants are crossed i.e. Rr × Rr, each parent will produce R and r gametes. Using these gametes in a punnet square (see attached image), the following offsprings will result: RR, Rr, Rr, and rr.

Out of these four offsprings;

1 RR is red : 2 Rr is pink: 1 rr is white

Hence, If four plants are produced from this cross, according to this question, the expected number of white-flowered plants will be 1 out of 4.