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2 years ago

Which question is testable?

Biology

1 answer:

Zina [86]2 years ago

7 0

Answer:

A.) How does changing the amount of water affect the growth of corn?

Explanation:

A seems to be the most testable question since you can't reasonably test if using human tissue that was removed for surgery is ethical or not, being happy or unhappy with a new job doesn't require a test, and asking if people will or will not be disappointed with an increase in insurance rates should be enough, no test required.

Regards!

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Fossils show that ancestors of the giraffe had shorter necks than the modern giraffe. The evolution of the modern giraffe may be

MaRussiya [10]

Answer:

B. Directional selection

Explanation:

When natural selection starts to choose one phenotypes that is an extreme (as in, a really small neck or a really long neck), this is an example of directional selection. It makes sense for giraffes to have evolved this way, because the longer the neck, the more ably they can eat food from high branches. The more food they could get, the more chance of reproduction, the more "evolutionarily fit" they are.

Stabilizing selection is when national selection picks average phenotypes (like a medium-sized neck). Disruptive selection is when the extremes are both picked (like all the medium-sized neck giraffes die, and two different species start to emerge). Sexual selection is picking a mate based on traits. Clearly, those answers don't work here.

8 0

3 years ago

Giving BRIANLIEST PLZ HELP AND ANSWER ASAP!

Vera_Pavlovna [14]

Answer:
I believe that the answer is Pulley #1

Explanation:

Have a nice day :D

5 0

2 years ago

How are genotypes and phenotypes related? (1 point)

BigorU [14]

Answer:

Genotypes determine the phenotypes expressed

Explanation:

8 0

2 years ago

Explain mutations and how they can cause genetic disease

nadya68 [22]

Answer:

A mutation is a change in a DNA sequence. Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals
called mutagens, or infection by viruses. Germ line mutations occur in the eggs and sperm and can be passed on to offspring, while somatic mutations occur in body cells and are not passed on.

Mutation has been the source of many Hollywood movies, but it's really a simple process of a mistake made in a DNA sequence as it's being copied. Some of that's just the background noise that DNA copying is not perfect, and we should be glad of that or evolution couldn't operate. But mutation can also be induced by things like radiation or carcinogens in a way that can increase the risk of cancers or birth defects. But it's pretty simple; it's basically an induced misspelling of the DNA sequence.
That's a mutation.

When a variant alters a protein that plays a critical role in the body, it can disrupt normal development or cause a health condition. A condition caused by variants in one or more genes is called a genetic disorder. In some cases, gene variants are so severe that they prevent an embryo from surviving until birth.

5 0

2 years ago

Whats the biggest mystery about the virus

dsp73

Explanation:

Hey, there!!

According to what i have learned, the biggest mystery about virus is; It acts like both living and non- living beings.

living characters includes :

It reproduce to make more no. of themselves. 
It feeds on various substances.

non- living characters: 

It can be crystallize. 
It dont respire and feed eith it is out from a host body.

Hope it helps...

5 0

3 years ago