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Elodia [21]
3 years ago
5

Which sentence correctly describes the relationship between chromosomes and genes?

Biology
1 answer:
marysya [2.9K]3 years ago
5 0
B is your answer hope it helps
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George has attached ear lobes. Barbara has free ear lobes, but she is heterozygous for this trait. What are the chances of their
tiny-mole [99]
The inheritance of a dominant gene E results in the free out unattached earlobe. If the lobe is attached directly to the head, the individual is homozygous recessive, and the rest genotype is present. Hope this helps.
8 0
3 years ago
Beriberi is caused by a deficiency of thiamine in the diet.
denis23 [38]

Answer:

Thiamine pyrophosphate  (derived from vitamin B1) is a coenzyme required for the activity of pyruvate dehydrogenase enzyme complex.

Explanation:

Pyruvate is the end product of glycolysis. During aerobic cellular respiration, pyruvate is oxidatively decarboxylated into acetyl CoA which in turn enters the Kreb's cycle. Oxidative decarboxylation of pyruvate is carried out by enzyme complex pyruvate dehydrogenase (PDH). The first step is simple decarboxylation and is catalyzed by pyruvate decarboxylase of the PDH complex.

The enzyme pyruvate decarboxylase and has a tightly bound coenzyme, thiamine pyrophosphate. Thiamine pyrophosphate is derived from vitamin B1. Lack of vitamin B1 in the human diet leads to beriberi that is characterized by an increased concentration of pyruvate in blood urine since oxidative decarboxylation cannot occur due to lack of the coenzyme thiamine pyrophosphate.

3 0
3 years ago
When you listen to your favorite music, what is the order in which the sound approaches and enters your nervous system and is in
kvasek [131]
In the ear, the sound waves enter through the auditory canal and hit the eardrum (tympanic membrane). The eardrum amplifies the sound and the waves move on to the middle ear, where three bones called the ossicles (malleus, incus, and stapes) amplify the sound further and vibrate. Then, the sound waves go to the cochlea where tiny hairs and other receptors turn the sound waves into a nerve impulse. This impulse is sent to the brain via the auditory nerve and interpreted by the brain.
4 0
3 years ago
Which factor is an abiotic factor of an aquarium ecosystem?
MariettaO [177]

Answer:

I would say, depth.

Explanation:

Hope this helps!

5 0
3 years ago
Please help asap brainliest<br> links will be reported
Kryger [21]

Answer:

In areas of Africa where malaria is prevalent the number of sickle cell cases remains consistent generation after generation. ---- support the hypothesis.

In Canada the incident of sickle cell anemia has been increasing in the population. -----  contradicts the hypothesis.

Explanation:

In areas of Africa where malaria is widespread the number of sickle cell cases remains consistent generation after generation while on the other hand, In Canada the incident of sickle cell anemia are lower in the population because of environmental condition is not good for increase in malarial disease. In Africa, the environment is suitable for the mosquitoes that causes malaria so there is high increase of sickle cell anemia in the population.

5 0
2 years ago
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