BIOLOGY HIGH SCHOOL

Changes in the DNA sequence that affect genetic information are known asa. replications
c. transformations
b. mutations
d. prokaryotes

Answers

Answer 1
Answer: The answer is b. mutations.

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During the swallowing reflex __________. during the swallowing reflex __________. the tongue closes the pharynx breathing rate increases the epiglottis closes the glottis the esophageal sphincter closes the esophagus

Answers

I believe that during swallowing the epiglottis closes the glottis. Epiglottis is a leaf-shaped cartilage located behind the tongue, at the top of the larynx, whose main function is to seal off the windpipe during eating, so as to prevent accidental inhalation of food. It is only during the process of swallowing that the epiglottis moves and performs this vital function. 

What is the plain of view in terms of a microscope?

Answers

Answer:

Field of view in Microscope

Explanation:

Field of View: Sometimes abbreviated "FOV", this is the diameter of the circle of light that you see when looking into a microscope. As the power increases, the field of view decreases.

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James Hutton disagreed with biblical estimations of Earth's age. In contrast to biblical estimates of a few thousand years, Hutton estimated that Earth was several million years old. True or false?

Answers

Answer:

True

Explanation:

James Hutton worked on basic principles of geology called uniformitarianism, which explains that every earth event that took place have taken time for its formation and everything has to go through uniform pattern of development. Thus, he do not believe in biblical estimation of earth's age.

A sperm cell and an egg cell fuse to form which structure?

Answers

they form a structure of zygote

The process of converting the genetic message from DNA into __________ is called transcription.

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The process of converting the genetic message from DNA into RNA is called transcription.

Transcription is the phase of gene expression in which a certain part of DNA is copied into RNA. Transcription is carried out by the enzyme RNA polymerase which joins nucleotides to produce an RNA strand and uses a DNA strand as a template. The three stages involved in transcription are initiation, elongation, and termination.
Dna transcription is the process of converting the genetic message dna to rna. hope this helps

Ex.1 Which of the following statements regarding mutation rates is correct? a) Mutation rates are independent of gene size. b) Mutation rates for all genes of an organism are approximately the same. c) Mutation rates are independent of exposure to external agents such as UV radiation. d) Average mutation rates vary among taxonomic groups. Practice Problem 64 The amino acid changes noted in Parts A-C are the result of changes in DNA sequence. For each of these amino acid changes, evaluate whether a single base change in the given codons could account for the change in the amino acid. Part A For which codon(s) could a single base change account for this amino acid change? Lysine to Asparagine Select all that apply. UUU AAG AAA none of these codons Part B For which codon(s) could a single base change account for this amino acid change? Alanine to Phenylalanine Select all that apply. GCG GCU GCC GCA none of these codons Part C For which codon(s) could a single base change account for this amino acid change? Leucine to Glutamine Select all that apply. CUC UUG UUA CUG CUU CUA none of these codons

Answers

b) Mutation rates for allgenes of an organism are approximately the same.
Mutations result to certain adaptations, functional or behavioral adaptations refer to particular things that an organism or organisms do to survive. In the example above, behavioral adaptations that birds do is through certain bird calls and migration, while bears hunt during warmer seasons and hibernate during winter season. 
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