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gizmo_the_mogwai [7]
2 years ago
15

Two types of worms exist in London. One which comes out during the day and the other which come out at night. The day worms are

eaten more often by the birds.
i) After a few years only night worms existed in the region. Why? (2)

ii) What kind of selection has taken place? (1)
Biology
1 answer:
Kaylis [27]2 years ago
6 0

i) Because the worms would have either learned to become night worms or all day worms would have been eaten faster than they could reproduce

ii) Natural selection. Humans had no interaction with which worms survived, so it's all natural.

I hope this helps! Good luck!

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Biologists breed a pair of plants where each plant has the color genes Gg. This means that any offspring these plants produce ha
Oduvanchick [21]

Answer:

.356

Explanation:

p = .25, the chance of getting an albino

q = .75, the chance of getting not an albino

n = 6, the number of offspring

r = 1, the number of albinos we want

What's the probability of getting exactly 1 out of six? This is called a binomial distribution. The formula is

p(X=r) = (nCr) p^{r}  q^{n-r}

nCr means n choose r, which you can find on your calculator (on a TI-84, it's MATH->PRB->nCr).

p(X=1) = (6C1) .25^{1}  .75^{5}

p(X=1) = 6* .25 * .237

p(X=1) = .356

That's a fairly low percentage, which makes sense, because you'd expect 1.5 albinos, if this were a statistically perfect world.

8 0
3 years ago
Which of the following events could cause pyruvate and lactate to accumulate in the blood of individuals with PDCD?
scoray [572]
Mutation causes a defect in one of the three enzyme that processes pyruvate
6 0
3 years ago
Which best describes oxidation-reduction reactions?
larisa86 [58]

option-A if there is a change in the oxidation states of atoms from reactants to products, the reaction in an oxidation reduction reaction describes the oxidation-reduction .

We know that oxidation is a process that increases the oxidation number, whereas reduction is a process that decreases the oxidation number. An oxidation-reduction (redox) is a type of chemical reaction wherein the electrons are exchanged among distinct strains Any chain reaction that occurs when the oxidation number of the a molecule, atom, or ion modifications by acquiring or losing an electron is an oxidation-reduction reaction. Reduction-oxidation reaction any chemical reaction in which one species oxidizes (loses electrons) while another species reduces (gains electrons) Oxidized. defines an element that has lost electrons and increased its oxidation number

Learn more about oxidation-reduction here:

brainly.com/question/28216195

#SPJ4

the complete question is:

Which best describes oxidation-reduction reactions?

A- if there is a change in the oxidation states of atoms from reactants to products, the reaction in an oxidation reduction reaction

B-If there is formation of salt and water, the reaction is an oxidation-reduction reaction.

C-If there is formation of a precipitate, the reaction is an oxidation-reduction reaction.

D-If there is no change in the oxidation states of atoms from reactants to products, the reaction is an oxidation-reduction reaction.

4 0
11 months ago
Why is having an extra chromosome 21 tolerable to the point that someone with this condition can survive to maturity?
Vilka [71]
I think that having an extra chromosome 21 is tolerable to the point that someone with this condition can survive to maturity because it does not replicate.

There should only be a pair of chromosome 21. In the event that there are 3 chromosome 21, the person that has this extra chromosome has Down syndrome. Changes in the number and structure of this chromosome may result to delayed development, intellectual disability, but not immediate death.
6 0
3 years ago
Air pollution is only caused by human activity. true or falseair pollution is only caused by human activity. false.
alekssr [168]
<span>Air pollution is only caused by human activity. False.</span>
4 0
3 years ago
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