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stich3 [128]
3 years ago
15

Differential survival and reproduction is best described by which term? natural selection creationism inheritance of acquired ch

aracteristics none of these
Biology
1 answer:
Sophie [7]3 years ago
5 0
I believe it is natural selection. Natural selection is when over a period of time, traits that are formed to help the organism survive, are passed to the next generation. For example, if there were two types of rabbits. One had black fur and the other was white. They both lived in the artic. The black furred rabbits are mostly eaten by predators because their black fur is easily seen against the ice and snow. Over a period of time, the black furred rabbit would die out. The next generation would mostly have white fur to help them survive.
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Silvia has blond hair, even though her mother and father each have brown hair. What do we know about Silvia's parents? At least
Svetradugi [14.3K]

Answer:

Each of her parents must have one recessive gene for blond hair color

Explanation:

  • Blond is a recessive trait
  • Since Silvia is blond this means she has both copies of the recessive gene for hair color
  • Therefore, both her parents have a recessive gene for blond hair and passed it down to her.
  • The parents don't have blond hair because their dominant gene for browns masks the recessive gene for blond.
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3 years ago
Which reproductive organ has the greatest number of different functions?
Nadya [2.5K]
The answer is Vas deferens
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2. What biosecurity measures does the hatchery take?<br> Enter your answer
Cloud [144]

Answer:

Provide a closed environment.

Clean the hatch chamber with chemical.

Explanation:

Biosecurity  is a measure which is taken in order to protect or prevent the population of existing species from infestation of harmful organisms and chemical substances. The hatchery should provide a closed environment in order to prevent the entry of harmful organism. Cleaning of the chamber where eggs were hatched with chemicals in order reduce the infestation of microorganism.

7 0
3 years ago
What happens to RNA polymerase II after it has completed transcription of a gene? a. It begins transcribing the next gene on the
Over [174]

The correct answer is: b. It is free to bind to another promoter and begin transcription

Transcription is the first step of gene expression in which DNA molecule is copied (transcribed) into RNA (mRNA) by RNA polymerase. The process of transcription is divided into three phases:

1. Initiation

• RNA polymerase with transcriptional factors bind to gene promoter  

• RNA polymerase unwinds DNA double helix (transcription bubble is formed)

2. Elongation

• RNA polymerases adds nucleotides complementary to DNA  

3. Termination

• RNA polymerase gets to stop codon (transcribes a sequence of DNA known as a terminator)

• Formed complementary RNA strand is released from DNA-RNA complex.

RNA polymerase is also released and can transcribe some other gene by binding to its promotor. RNA polymerase will transcribe just the genes whose products are needed at a particular moment.

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