Running with an acceleration of 3 m/min2 is speeding up 3 m/min for every meter traveled

Answers

Answer 1
Answer: I presume this is a true or false question? If that's the case, then the correct answer to this question is false. Running with an acceleration of 3 m /min2 does not equate to speeding up 3 m / min2 for every meter traveled. 

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During meiosis, genetic recombination may occur more than once through the process of ____________________, resulting in an increase in genetic variability.

Answers

Answer:

Crossing-over

Explanation:

Crossing-over is a phenomenon that occurs in the Prophase stage of meiosis I. Two chromosomes of a homologous pair comes together in a process called SYNAPSIS to form a TETRAD structure. While the chromosomes synapses, breaks occur at corresponding points in the non-sister chromatids i.e in one chromatid of each chromosome. Since the chromosomes are homologous, breaks at specific points mean that the segments that are broken off contain specific genes i.e. alleles. The broken sections are then exchanged between the chromosomes to form complete new units, and each new recombined chromosome of the pair can go to a different daughter sex cell.

In meiosis, the maternal and paternal chromosomes can be shuffled into daughter cells in many different combinations. The resulting chromosomes are not entirely maternal, neither are they entirely paternal. This ensures genetic variation in sexually reproducing organisms.

crossing over (aka recombination)

Air moves through the respiratory system in a continuous cycle. Which of the following correctly describes the movement of air through the parts of the respiratory system

Answers

Nose ->pharynx -> trachea -> bronchi -> bronchioles -> alveoli ->gas exchange with the cells and then back out of your system. 

Answer:

nose, trachea, bronchioles, alveoli, cells

Explanation:

1. A flexible, supporting structure found only in chordates is the A. nerve net
B. notochord
C. pharyngeal slits
D. dorsal fin.

2. Ancient chordates are thought to be most closely related to which of the following species?
A. spiders
B. earthworms
C. octopi
D. sea stars

Answers

A flexible, supporting structure found only in chordates is the notochord. The correct option among all the options that are given in the question is the second option or option "B".

Ancient chordates are thought to be most closely related to sea stars. The correct option among all the options that are given in the question is the last option or option "D".

The notochord is a flexible, supporting structure found only in chordates. Ancient chordates are most closely related to octopi.

The correct answer for the first question is B. notochord. The notochord is a flexible, supporting structure found only in chordates.

It provides support to the body and serves as a precursor to the vertebral column in vertebrates. Examples of chordates include fish, birds, and mammals.

The correct answer for the second question is C. octopi. Ancient chordates are thought to be most closely related to cephalopods like octopi.

Both groups share certain characteristics in their body structure and development.

Learn more about chordates here:

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Gregor Mendel studied pea plants to determine the patterns of inheritance. What is not a reason Mendel used pea plants in his experiments? Check all that apply.

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Answer:

B and D

Part 2 is C

Explanation: edge

Answer: Gregor Mendel, pea plants were fundamental in allowing him to understand the means by which traits are inherited between parent and offspring. He chose pea plants because they were easy to grow, could be bred rapidly, and had several observable characteristics, like petal color and pea color.

Explanation:

which group of seed plants is named for producing seeds that are not enclosed in an ovary, where the majority of species also exhibit unique, cone-shaped reproductive structures?

Answers

Answer:

Gymnosperms

Gymnosperms- are named for producing seeds that are not enclosed in an ovary, where the majority of species also exhibit a unique, cone-shaped reproductive structure.

Explanation:

Hope it helps you 。◕‿◕。

Which of the following statements best supports Mendel's Law of Segregation?Mendel law of segregation

Answers

During gameteformation, the individual alleles that comprise a gene must separate. The correct option is C.

What is law of segregation?

As per Mendel's law of segregation, "during gameteformation, every gene segregates from each other so that each gameteconveys only one allele for each gene." The secondlaw of inheritance is the law of segregation.

During gameteformation, the individual alleles that comprise a gene must separate from each other in a particular way.

Thus, the correct option is C.

For more details regarding law of segregation, visit:

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The missing options of the question are:

  • A-individual traits are inherited independently of one another.
  • B-dominant traits are always separated from recessive traits during reproduction.
  • C-the individual alleles that make up a gene must separate during gamete formation.
  • D-breeding two true individuals together always produces offspring‘s with the recessive phenotype

Answer: The answer is C, the individual alleles that make up the gene must SEGREGATE (which means separate) during gamete formation, hence the name “law of segregation”

Explanation: Hope this helps