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Aleksandr-060686 [28]
2 years ago
13

Electron Microscopes can see cells and cell structures as small as

Biology
1 answer:
zhannawk [14.2K]2 years ago
7 0

Answer:

100,000th of a meter which is B

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Both Duchenne muscular dystrophy and color blindness are caused by recessive alleles. DMD, unlike color blindness, nearly always
Ronch [10]

Answer: Although both are X-linked recessive conditions, and therefore more likely in males, with the single X-chromosome. The recessive allele in colour blindness occurs at a higher frequency in the population and is a mild condition. Thus colour blindness does occur to a lesser extent in females because it needs the double recessive condition. DMD is a severe, disabling condition with a limited lifespan, and recessive allele frequency much lower, so the double recessive condition in females is very rare.

Explanation: DMD is an X-linked recessive, “nearly always in males” suggest that it also occurs due to a new mutation or some rare condition e.g. double recessive from an affected father and carrier mother, or inactivation of the normal gene in a heterozygote. It is also found that the defective allele is not completely recessive and that female carriers may exhibit mild to moderate effects.

colour blindness is polygenic, although the genes are all X-linked. It is more common in males than females. Females can carry two recessive alleles and so express the phenotype, but this is uncommon because the frequency of the recessive gene is low.

There are similarities in that both are X-linked recessives, therefore commonly expressed in males, who only have one X chromosome. The gene frequency of the colour blindness recessive is much higher than that of DMD, so the double recessive condition, which affects females, is more likely to be seen with colour blindness. In addition, DMD is a severe condition associated with disability and limited lifespan, which reduces the probability of mating between an affected male and carrier female

6 0
3 years ago
What are two body systems that are used when shooting an arrow and how are the used?
iren [92.7K]

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The primary archery muscles of the shoulders and upper back

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use to do it and they have a poster with a question like This on it

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In our circulatory system, blood transports blood cells and dissolved ions when it moves through the body. Which of the followin
Sloan [31]
Do you have the following answers
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Dorothy Peterson was diagnosed with breast cancer. She and her doctor agreed upon treating this surgically with a/an . This is a
mojhsa [17]

Answer: Lumpectomy

Explanation: Lumpectomy is procedure in which Cancerous tissues are removed. Lumpectomy is a surgical removal of lump or cancerous tissue of breast tissue usually in the treatment of breast Cancer.

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True or false
ANEK [815]

Answer:

Explanation:

false

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