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2 years ago

Explain what frame shift means and is it more or less likely to cause a noticeable mutation than a substitution

Biology

1 answer:

harina [27]2 years ago

3 0

Answer:

A frameshift mutation can be described as a genetic mutation in which a single nucleotide or more than one nucleotide is inserted or deleted from the sequence of the DNA. As the gene expresses itself in the form of triplets of a genetic code, insertion or deletion can cause devastating changes in the genetic code due to which wrong proteins will be synthesized.

Frameshift mutations can be more noticeable than the substitution mutation. In a substitution mutation, only one of the nucleotides is shifted with another. The entire genetic code is not affected by it.

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In rabbits, short hair (S) is dominant over long hair (s). What genotype and phenotype ratios are expected from a cross between

irga5000 [103]

Answer:

Answer:

Genotype Phenotype

SS 1/4 Short hair 3/4

Ss 2/4 Short hair 3/4

ss 1/4 Long hair 1/4

Explanation:

Both are heterozygous for the trait so we can expect that the cross would be:

Ss x Ss

S s

S SS Ss

s Ss ss

So the resulting off-spring would have the following genotype and phenotype:

1 out of 4 will have a genotype of SS.

2 out of 4 or half will have a genotype of Ss.

1 out of 4 will have a genotype of ss.

But because short hair is dominant the phenotype ratios would differ because Ss and SS would express short hair, so we add up their ration:

Short hair: 1/4 + 2/4 = 3/4

Long hair: 1/4

So in summary:

Genotype Phenotype

SS 1/4 Short hair 3/4

Ss 2/4 Short hair

ss 1/4 Long hair 1/4

Explanation:

7 0

3 years ago

Simon is an avid gardener who spends a lot of time caring for the plants in his garden. To minimize damage from pests from his g

dybincka [34]

The emergence of resistance is a result of EVOLUTION by natural selection. It is a major evolutionary force.

<h3>Evolution and natural selection </h3>

The term evolution refers to the biological process of descendence with modification.

Natural selection refers to the differential survival or reproduction of the organisms better adapted to a given environment.

In this case, the presence of the pesticide generates an evolutionary constraint, thereby selecting pesticide-resistant individuals in the population.

Learn more about evolution here:

brainly.com/question/4207376

6 0

2 years ago

number the steps in the correct order to describe how bees collect pollen and nectar to feed the hive and, in the process,helps

Free_Kalibri [48]

Bees go out of the hive in search of flowers with nectar by sensing static electric zaps with there small hairs. When they do find a flower they land and start sucking up the nectar in the process pollen falls on their coat and they carry it to the next flower to suck nectar from. the nectar is brought back to the hive inside the bees and is thrown up as honey wich the lave eat and if a lave is to become a queen they are fed royal jelly. <span>Royal jelly is a white secretion produced by young female worker </span>bees<span>. It is comprised of pollen and chemicals from the glands of worker </span>bees.

7 0

2 years ago

A disease characterized by the presence of many tumor masses in the bone and bone marrow is

rosijanka [135]

A disease known as Multiple myeloma follows your requirements.

Hope it helped,

Happy homework/ study/ exam!

6 0

2 years ago

Read 2 more answers

What evidence suggests that vertebrates are more closely related to echinoderms than are any other invertebrate phyla?

VMariaS [17]

Answer:

Option C, shared DNA sequences

Explanation:

Complete question -

What evidence suggests that vertebrates are more closely related to echinoderms than are any other invertebrate phyla?

- shared patterns of development

- shared morphology

- shared DNA sequences

Solution

Vertebrates have true backbone while invertebrates lack true backbone. Among the invertebrates, the echinoderm phylum is closely related to vertebrates as the echinoderm possesses notochord (similar to backbone) during their early stage development which disappears later.

Through the genomic sequence studies it has been found that echinoderms are similar to vertebrates in many ways. Echinoderms have diverged from deuterostomes along with human and hence pose some genetic similarity which can be devised through study of common DNA sequences

Hence, option C is correct

5 0

3 years ago