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3 years ago

Why would it be pointless for reptiles to sit on their eggs to incubate them as birds do?

Biology

2 answers:

8090 [49]3 years ago

7 0

Reptiles are ectotherms and cannot raise their body temperature above that of the environment.

zloy xaker [14]3 years ago

7 0

Answer:

The options:

A. Reptiles have teeth with which to defend their eggs from predators, so they do not need to hide the eggs.

B. Reptiles have no feathers and cannot cushion the eggs from bumping into each other without them.

C. Reptiles are ectotherms and cannot raise their body temperature above that of the environment.

D. Reptile eggs are not amniotic and have no shell, so sitting on them would crush them.

The CORRECT ANSWER IS C.

C. Reptiles are ectotherms and cannot raise their body temperature above that of the environment.

Explanation:

Birds do position themselves on their eggs so as to keep it warm and cause the eggs to hatch as its body temperature of the hen supply the needed heat. Birds are well known endothermic homeotherms, and keep to a single body temperature. In comparison to reptiles which are ectothermic poikilotherms, that have its body temperature heavily reliant on the temperature of its surroundings environment.

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Select the kingdoms where all prokaryotes are classified.

grigory [225]

Answer:

Archaea

Eubacteria

Explanation:

Both the kingdoms archaea and eubacteria comprise of prokaryotes yet there are some differences present between the two kingdoms.

The archaea have a distinct evolutionary history as compared to the eubacteria. The cell wall of archaea is made up of Pseudo-peptidoglycan where as the cell wall of eubacteria is made up of peptidoglycan or lipopolysaccharide. Interior membranes cannot be found in the archaea but are present in the eubacteria.

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4 years ago

In Drosophila melanogaster, vestigial wings are caused by a recessive allele of a gene that is linked to a gene with a recessive

riadik2000 [5.3K]

The correct answer is gray bodied, normal-winged flies plus black bodies, vestigial-winged flies = 17%.

In the given case, the genes are linked, thus, there is no independent assortment. B is gray body (dominant), b is black body (recessive), W is normal wings (dominant), and w is vestigial wings (recessive).

The parent generation would be: bbWW × BBww

After crossing the parent generation, the F₁ generation would be BbWw

Even so, during forming gametes for the F₂ generation, one basically cannot arrange or randomly assort the alleles. One has to take into consideration that the chromosomes are Bw and bW, thus, they will produce crossovers.

25% Bw-Bw, 50% Bw-bW, 25% bW-bW

As there is a crossover event, so one cannot get an F₂ who was BW (gray bodied and normal winged), or bw (black bodies and vestigial winged). Hence, the mentioned answer indicates or suggests towards all the order of instance or occurrence where a crossover event has occurred that associates back to the map units.

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4 years ago

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Give a definition of evolution using the word "allele" in the definition

NeTakaya

Answer:

Evolution is the adaptations of organisms to their changing to there environments to better there lives. The Evolutionary processes depend on both changes in genetic variability and changes in allele over time.

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3 years ago

The formation of a multicellular organism from a fertilized egg is called development. development is accomplished through the p

Svetllana [295]

What are the choices?

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What type of cells goes through the process of aerobic cellular respiration?

finlep [7]

Answer:

The process of aerobic cellular respiration mainly takes place in the Mitochondria.

Explanation:

Hopefully this helps :)

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3 years ago