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yanalaym [24]
4 years ago
14

What is believed to be the most significant result of the evolution of the amniotic egg? _____ Select one: a. Tetrapods were no

longer tied to the water for reproduction. b. Tetrapods can now function with just lungs. c. It led to the evolution of the placenta. d. Newborns are much less dependent on their parents. e. Embryos are protected from predators.
Biology
1 answer:
Svetradugi [14.3K]4 years ago
8 0

Answer:

a. Tetrapods were no longer tied to the water for reproduction

Explanation:

The amniotic egg is hard-shelled and is called an amniotic egg because the embro develops within a sac called amnion.

Amphibians were first tetrapods to invade the land. The need to return to water for reproduction limited their distribution. Amniotes evolved an egg that broke the tie to freshwater.

Amniotic egg contains a series of extraembryonic membranes (Amnion, allantois, chorion, yolk sac) that, among their features , takes the aquatic environment with the egg.

Hence  a. Tetrapods were no longer tied to the water for reproductionis believed to be the most significant result of the evolution of the amniotic egg.

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Reduce or stop the production of energy molecule i.e ATP

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Proton is an essential ingredient to carry out light reactions successfully and the proton requirement is fulfilled through the proton gradient formed along the membrane. A chemical that blocks the flow of electrons thereby hindering the flow of proton will adversely affect the electron transport chain reactions thereby causing reduced/no conversion of ADP to ATP.  

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Ann received 23 chromosomes from her mother and 23 chromosomes from her father. The combination of genes on these chromosomes co
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As per the given scenario, the chances of an offspring as a male or female is 50% each.

<h3>What are chromosomes?</h3>

The thread like structure resides inside the nucleus is referred to as chromosomes.

As there are 23 pair of chromosomes present in the organisms, they transfer their equal numbers in the future generation with some variations.

As per the given image, it is clearly shown that there is 50% possibility of being male or female offspring.

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7 0
2 years ago
You have identified two mutants with same phenotype.
algol13

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No, there are multiple ways in which different mutations in the same gene can cause the same phenotype

Explanation:

Several different mechanisms of mutation can lead to the same phenotype. For example, lets say our phenotype is that flies have white eyes, and we know that this occurs in one particular gene that normally makes the eye colour red. (the red gene)

These mutations likely rendered the red gene ineffective (as the eyes are not red). However, this could happen in a variety of ways.

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