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lbvjy [14]
3 years ago
6

Your hands moved the chromosomes in your models. What part of a cell did your hands represent?

Biology
1 answer:
Jlenok [28]3 years ago
4 0

Answer:

spindle fibres

Explanation:

during mitosis/meiosis spindle fibres form and pull the chromosomes to each end

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Analyze how a point mutation can affect the overall protein shape and function, using hemoglobin as an example.
aniked [119]

Answer:

A point mutation can be described as a mutation in which changes occur in a single nucleotide. A nucleotide may get changed, deleted or inserted from the sequence of DNA. Point mutations can be harmless or harmful depending on the nucleotide in which the changes occur.

A change in just one nucleotide can result in the formation of wrong amino acid and hence changed or wrong proteins can be formed. If the original protein was involved in cellular reproduction, then the entire process of reproduction can be affected by a point mutation.

Sickle- cell anaemia is a disease in which the body fails to produce enough healthy red blood cells. This disease occurs due to point mutation. Point mutation occurs where glutamine (GAG) of the β-globin gets changed into valine (GUG). This change causes the haemoglobin to get a deformed structure due to which it is not able to carry out oxygen.

5 0
3 years ago
The final stage in the life cycle of the most massive stars is a
vichka [17]

Answer:

Death.

Explanation:

The final stage of a red supergiant is the fusion of silicon into iron.

Hope my answer is helpful.

5 0
3 years ago
Read 2 more answers
Transport that moves materials against the concentration gradient is said to be:
mylen [45]

Answer:

active transport maybe ?

Explanation:

3 0
2 years ago
Black coat color in horses is conferred by the presence of a dominant B allele. Chestnut horses are genotype bb. A population of
AysviL [449]

Answer:

Frequency of B allele is 0.6681

Explanation:

If p represents the frequency of dominant allele and q represents the frequency of  recessive allele, according to Hardy-Weinberg equilibrium:

p + q = 1

p² + 2pq + q² = 1

where p² = frequency of homozygous dominant genotype

q² = frequency of homozygous recessive genotype

2pq = frequency of heterozygous genotype

Given that number of recessive chestnut horse = 28

Total horses = 226 + 28 = 254

frequency of b² genotype = 28/254 = 0.1102

frequency of recessive b allele = √0.1102 = 0.3319

So, frequency of B allele =

1 - 0.3319 = 0.6681

Hence frequency of B allele is 0.6681

7 0
3 years ago
What process takes place when oxygen is not available for cellular respiration
nlexa [21]

There is a backup system that your body uses to create ATP, and it is called Anaerobic Respiration.

7 0
3 years ago
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