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3 years ago

Which of the following animals is an invertibrate

Biology

2 answers:

Marina CMI [18]3 years ago

7 0

Answer:

Forgot to put in a image my guy

Explanation:

Can't answer it without context

Darya [45]3 years ago

5 0

Theres no picture but invertibrate animals have no backbone or any bones at all so hope this helps

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Consider a locus with two alleles - B and b. B is dominant, while b is recessive. There is no mutation. B has a selective advant

Marat540 [252]

Answer:

0.09

Explanation:

<h3><u>Before selection</u></h3>

Total number in population = 1000

Genotype frequencies

Genotype frequency of BB = 500/1000 = 0.5

Genotype frequency of Bb = 250/1000 = 0.25

Genotype frequency of bb = 250/1000 = 0.25

Allele frequencies

Allele frequency of B = BB genotype frequency + half of the Bb genotype frequency = 0.5 + (0.25/2) = 0.625

Allele frequency of b = bb genotype frequency + half of the Bb genotype frequency = 0.25 + (0.25/2) = 0.375

<h3><u>After selection</u></h3>

We are told that after selection, the genotype frequency of bb is changed as they become 50% less fit. This means the frequency of bb individuals changes from 250 to 125 individuals (50% reduction).

Now the total number of individuals is 500 + 125 + 250 = 875.

Genotype frequencies

Genotype frequency of BB = 500/875 = 0.57

Genotype frequency of Bb = 250/875 = 0.29

Genotype frequency of bb = 125/875 = 0.14

Allele frequencies

Allele frequency of B = BB genotype frequency + half of the Bb genotype frequency = 0.57 + (0.29/2) = 0.715

Allele frequency of b = bb genotype frequency + half of the Bb genotype frequency = 0.14 + (0.29/2) = 0.285

<h3><u>Change in frequency of B after 1 generation</u></h3>

0.715 - 0.625 = 0.09

7 0

3 years ago

, which population(s) would be hurt if bears were added?

hoa [83]

The population(s) would be hurt if bears were added as bears are omnivores.

<h3>How do bears get the strength vitamins they need?</h3>

Plant ingredients make up the bulk of a bear's diet – every so often as plenty as ninety consistent with cent. However, fish and meat are vital reassets of protein and fat, aleven though maximum non-coastal bears depend upon carrion (along with winter-killed animals

The maximum usually eaten styles of flowers are fleshy roots, fruits, berries, grasses, and forbs. If bears are at the hunt, their prey can consist of fish (particularly salmon), rodents like floor squirrels, carrion, and hoofed animals like moose, elk, caribou, and deer.
They are particularly exact at catching the younger of those hoofed species. Grizzly bears also can goal home animals like farm animals and sheep and reason economically vital losses for a few ranchers.

Read more about population:

brainly.com/question/25896797

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4 0

1 year ago

Cerebrospinal fluid circulates within the ventricles of the brain and in the subarachnoid space outside the brain. Cerebrospinal

irina1246 [14]

Answer:

true

Explanation:

Cerebrospinal fluids is a colorless fluid that is secreted in the choroid plexus,and circulates in the ventricles system and sub -aranchinoid space of the brain and spinal cord. its provides nutrients to the surrounding neurons, cushions the effects of trauma, pressure, acts as buffer and provides protection through immune system .

it plays a vital role in regulating blood flow, through a process called cerebral auto regulation,This is needed to maintain efficient cerebral blood flow of oxygen and other metabolites, and withdraw of metabolic wastes from the brain.

in order to analyze it to diagnose some neurological diseases its sample is usually taken out in a process called lumbar puncture.

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3 years ago

Homeostasious what is it and what does it mean

Harman [31]

Bodily functions that help keep it stable. Like sweating when your are hot keeps your body at a cooler temperature rather then burning up.

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3 years ago

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Plants, algae , and some bacteria use the energy of sunlight in the process of?

Sliva [168]

Photosynthesis.. hope I helped (:

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3 years ago