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3 years ago

State the characteristic of tracheoles that help with gaseous exchangein insects.

Biology

1 answer:

Taya2010 [7]3 years ago

7 0

Answer:

made up of a single epithelium layer to allow diffusion of gases.
terminal ends of fine tracheoles are filled with a fluid in which gases dissolve and therefore transported in solution form

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An asynchronous clr' signal (multiple answers can be correct, select all that apply. you will get partial credit in case of miss

stiv31 [10]

Correct Question:

An asynchronous counter signal:

Answer:

overrides the clock-gated input signal(s).

Explanation:

An asynchronous counter signal normally overrides the clock-gated input signal(s).

An asynchronous counter is a type of counter whereby each flip-flop output serves as the clock input signal for the next flip-flop signals and preset can be used to override the clock-gated input signal(s).

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4 years ago

Hi, biology help needed! Any help is greatly appreciated!

Brilliant_brown [7]

Answer:

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3 years ago

During meiosis, homologous chromosomes can exchange DNA in a process known as —

garik1379 [7]

<span>During meiosis, homologous chromosomes can exchange DNA in a process known as : Crossing over Crossing over is one of the final phase of genetic recombination, which happen in Meiosis during a process called Synapsis. It occurs when matching part of matching chromosomes broke and reconnect with other chromosomes
I hope that my answer is helpful! Let me know if you need something more :)</span>

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3 years ago

In plants tall (T) is dominant to short (t) and round seed is dominant to wrinkled seeds (r). If a parent is short and wrinkled

Nuetrik [128]

Answer:

Parent cross= ttrr (short, wrinkled) × TtRr (hybrid)

POSSIBLE GAMETES BY EACH PARENT:

ttrr - tr, tr, tr, and tr

TtRr - TR, Tr, tR, and tr

Explanation:

This question involves two genes in a certain plant. One gene is coding for height while the other is coding for seed shape. The alleles for tallness (T) and round seeds (R) is dominant over the alleles for shortness (t) and wrinkled seeds (r).

According to this question, a parent that is short and wrinkled (ttrr) is crossed with another parent that is hybrid (TtRr) for both traits. This means that the parent cross is as follows: ttrr × TtRr

The possible combination of gametes that will be produced by each parent is as follows:

ttrr - tr, tr, tr, and tr

TtRr - TR, Tr, tR, and tr

See attached image for the punnet square using these gametes.

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3 years ago

Scientists notice structural similarities between fossils of a land animal and an aquatic organism. They know the similarities a

Pachacha [2.7K]

<span>The correct answer is common ancestry. Common ancestry is the explanation for species from completely different environments having similar features. For example: there is fossil evidence that whales are actually evolved from wolf-like animals due to fossil evidence of a transitional evolutionary stage (this is the fossil that can help provide evidence of this common ancestry) that shows a common ancestor between land mammals and whales.</span>

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3 years ago

Read 2 more answers

State the characteristic of tracheoles that help with gaseous exchangein insects.​

State the characteristic of tracheoles that help with gaseous exchangein insects.