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3 years ago

Which childhood experience puts someone at risk of becoming a bully

Biology

2 answers:

aivan3 [116]3 years ago

5 0

Abuse, PTSD, or they grow up watching someone do it so they do it

Deffense [45]3 years ago

3 0

One reason may be because of they were being bullied so they want people to know how they felt like?

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Why does a movie projector have a convex lens?

Virty [35]

Answer:

Only convex lenses can generate real images, which can be projected.

Explanation:

8 0

3 years ago

When water used to cool machinery is returned to a river, it raises the river water temperature. this causes a sharp decline in

baherus [9]

Out of the following given choices;

(1) an increase in the number of clams

(2) a decrease in the number of water plants

(3) an increase in the number of crabs

(4) a decrease in the number of crayfish

The answer is D. Crayfish are are freshwater crustaceans resembling small lobsters. Clams and crabs are found in marine waters. Most crayfish cannot tolerate polluted water. Crayfish feed on animals and plants, either living or decomposing, and detritus, therefore a decrease in small invertebrates in the river would decrease their food source thence consequently affect their numbers.

8 0

3 years ago

Why is cell differentiation necessary for the survival of multicellular organisms?

inn [45]

<u>Answer:</u>

The cell differentiation is necessary for the survival of multi-cellular organisms because at the beginning all the organisms start from a single cell called the zygote. This zygote undergoes mitosis and forms many uniform cells that do not have any specific function.

The differentiation of these cells is required for the development of specific organs and organ systems from this single cell.Cell differentiation is an essential process that gives a specific function to the cells of the body.

6 0

4 years ago

DNA replication occurs during the _ phase of the _

Ede4ka [16]

Answer:
Replication of the DNA occurs during the S phase of interphase. !!!

Explanation:
Interphase is essentially the first and longest phase of the cell cycle characterized by three distinct phases: growth phase 1 (G1), synthesis (S) phase, and srowth phase 2 (G2).

4 0

3 years ago

Humans vary in their ability to taste the bitter chemical compound phenylthiocarbamide (PTC). The aividuals from an isolated pop

Misha Larkins [42]

Answer:

C. 0.29

Explanation:

Hello!

The Hardy-Weinberg equilibrium establishes that the frequencies of the different genotypes that are formed during mating depend solely on the allelic frequencies of the population. Considering an autosomal locus, when the population is infinitely large and is not subject to any evolutionary force, both allelic and genotypic frequencies will remain constant from generation to generation, being able to predict their values for future generations.

When the population is in Hardy-Weinberg equilibrium, genotypic frequencies are given following the binomial model:

p²= f(A₁A₁) 2pq= f(A₁A₂) q²= f(A₂A₂)

and

p²= P 2pq= H q²= Q

Considering the autosomal locus with two alleles A₁ A₂, where A₁ shows complete dominance over A₂(resesive)

P: f(A₁A₁), H: f(A₁A₂) and Q: f(A₂A₂) represent the genotipic frequencies and P+H+Q=1

and p: f(A₁)= P and q: f(A₂) represent the allelic frequencies and p + q= 1

The given information is:

Phenotipe: "Ability to taste PTC" is dominant to the Phenotipe: "Incapable of tasting PTC"

This means that both homozygous-dominant and heterozygous individuals present the phenotipe "Ability to taste PTC" and only homozygous-resesive individuals present the phenotipe "Incapable of tasting PTC"

Sample size: 780

708 individuals were able to taste PTC ⇒ These represent the homozygous-dominant and heterozygous individuals of the population.

70 individuals were incapable of tasting PTC ⇒ These represent the homozygous-resesive individuals of the population.

The frequency of the non taster allele is:

$q= \sqrt{Q} = \sqrt{\frac{70}{780} } = 0.29$

The correct option is C

I hope it helps!

6 0

4 years ago