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Liula [17]
3 years ago
7

Which experiment should be conducted as a field investigation? observing changes in the nesting behavior of wood ducks measuring

the fermentation rate of yeast in salt water determining the germination rate of a new soybean hybrid investigating gene expression in fruit fly offspring
Biology
2 answers:
Zolol [24]3 years ago
5 0

Answer:

A- observing changes in the nesting behavior of wood ducks

Explanation:Just Took Test :)

Ket [755]3 years ago
3 0

Answer:

Observing changes in the nesting behavior of wood ducks should be conducted as a field investigation.

Explanation:

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Imagine you are sitting in a very quiet room when suddenly behind you there’s a very loud bang, like a firecracker exploding.
lisov135 [29]

Answer:

A. I would be startled by the sudden noise and would probably take cover some wheres. B. My nerves in my ears would send a signal to my brain causing my twitching muscle fibers to react quickly and heart might stop for a moment.  C. The heart rate would increase the brain would be aware that there may be more sudden noises or events your adrenaline would be pumping and your quick twitch muscle fibers would probably be tense or contracted ready to make quick sudden movements if necessary and your hairs would stick up i guess as extra senses for if something would touch you.  

Explanation:

not to mention but by the time you are startled your senses would probably be heightened due to you being  aware of your surroundings such as you would be constantly looking around you would hear better and probably move quicker for a short period of time due to pumping adrenaline.

5 0
3 years ago
Why spaghetti a heterogeneous mixture?
Annette [7]
It is b i think_____________
4 0
3 years ago
When a physical ailment has no apparent medical cause, doctors may suspect a _________ disorder?
RoseWind [281]
When a physical ailment has no apparent medical cause, doctors may suspect a somatoform disorder. Essentially a mental disorder
5 0
3 years ago
A woman, S.R., had a maternal grandfather with hemophilia A (OMIM 306700), an X-linked recessive condition that reduces blood cl
Sidana [21]

Answer:

Hemophilia is a x-linked recessive inherited bleeding  disorder. in this disease blood does not clot properly due to the decreased level of blood clotting factor VIII (8) or factor IX (9).

In x-linked recessive condition, the disease is transmitted from father (affected male) to his daughter and mother (affected female) to her son and skip of generation getting affected is also occurs.

  • there will be 50% chance of her (S.R.) each son to be affected with hemophilia.

Explanation:

Hemophilia is caused due to mutation of one gene which is responsible for the making of proteins of  blood coagulation factor viii or ix. the affected person bleeds continuously from any injury and that can cause serious issues.

here,

grandfather of s.r is affected (xₐy) and grandmother is normal (xx) will produce

                                                   ↓

 s.r's mother who is a carrier (xₐx) [as xₐy and xx will produce 100% carrier xₐx daughter]

                                                    ↓

s.r's mother is a carrier (xₐx) but her father is normal (xy) will produce,

                                                   ↓

s.r who has 50% chance of being carrier (xₐx) and 50% chance of being normal (xx) [as she is the only child] and she has a normal (xy) partner, they will give,

                                                     ↓

  1. if s.r is a carrier (xₐx) then one of her son will be affected (xₐy)   [as xₐx and xy =xₐy]
  2. if s.r is normal (xx) then her son will be normal (xy) [as xx and xy will give xy]

here,<u> 50% chance of her son to be affected with hemophilia</u> [as S.R of being affected is more considerable].

8 0
4 years ago
What must parasites be careful to not do?
stiks02 [169]

Answer:

Kill their host.

Explanation:

If their host dies, they will not be able to live and reproduce.

6 0
3 years ago
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