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3 years ago

All life on earth exists in a region know as

Biology

1 answer:

Fofino [41]3 years ago

3 0

The answer is 'The Biosphere.'

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Why don't some mutations to a DNA sequence have a significant effect on pheonotypic expression? (2 points) A mutation may cause

Sav [38]

The first one: A mutation may cause a change that codes for the same amino acid. It is not possible (or likely) that the transcription will skip over the mutation. Mutations, especially large frameshifts, are important. It does not matter how much proteins are replicated. A mutation in the DNA sequence will affect the mRNA.

4 0

3 years ago

How many protons are in a sodium ion?

kvasek [131]

Answer:

11 protons

Explanation:

A neutral sodium atom contains 11 protons and 11 electrons. By giving one more electron we get a positively charged Na⁺ ion with a net charge of +1 . But the number of protons remain unchange .

7 0

4 years ago

Read 2 more answers

Involves leaving trees of different sizes and types to create an ecosystem; more expensive type of foresting

Elodia [21]

I think the appropriate response is Forest ecosystems. It is a characteristic forest unit comprising of all plants, creatures, and small-scale living beings here working together with the greater part of the non-living physical components of nature. The woodland biological system is vital.

7 0

3 years ago

Which form of evidence for evolution was not available to Darwin in 1858?

pogonyaev

I believe it is B.
Don’t hate me if I am wrong :,)

7 0

3 years ago

Read 2 more answers

In corn, small pollen (sp) is recessive to normal pollen (sp+) and banded necrotic tissue, called zebra necrotic (zn), s ssive t

alex41 [277]

Answer:

Option B

Explanation:

Please see the attached image

Given -

Allele for small pollen is "sp"

Allele for normal pollen is "sp+"

and "sp+" is dominant over "sp"

Allele for zebra necrotic tissue is "zn"

Allele for normal necrotic tissue is "zn+"

and "zn+" is dominant over "zn"

Cross is carried out between

sp+ sp zn+ zn x sp+ sp zn+ zn

The gametes of the parent cells are -

sp+ zn+, sp+zn, spzn+, spzn

The cross would be as follows

sp+ zn+ sp+zn spzn+ spzn

sp+ zn+ sp+ sp+ zn+ zn+sp+ sp+ zn+ znsp+ sp zn+ zn+ sp+ spzn+ zn

sp+zn sp+ sp+ zn+ znsp+ sp+ zn znsp+ sp zn+ zn sp+ sp zn zn

spzn+ sp+ sp zn+ zn+sp+ sp zn+ znsp sp zn+ zn+ sp sp zn+ zn

spzn sp+ sp zn+ zn sp+ sp zn zn sp sp zn+ zn sp sp zn zn

Hence, option B is correct

7 0

3 years ago