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NeX [460]
3 years ago
15

When analyzing three genes that reside on the same chromosome, the expected frequency of double-crossover events can be determin

ed by multiplying the frequency of single crossovers between each pair of genes. What would cause the number of observed double-crossover events to be less than the expected value?
Biology
1 answer:
statuscvo [17]3 years ago
8 0

Answer:

The answer is positive interference

Explanation:

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A biologist treats a cell with a certain chemical that inhibit the cell ability to synthesise DNA
Tomtit [17]

If the cell treated with a chemical that inhibits DNA synthesis is treated to undergo the process of the cell cycle, the phase that will be affected is the S-phase of interphase.

<h3>What is interphase?</h3>

The interphase stage of cell division is the resting stage between two successive divisions.

The interphase is further grouped into three phases namely:

  • G1 phase
  • S-phase or synthesis phase
  • G2 phase

The synthesis phase of interphase is the stage where new DNA strand is synthesized, hence, if the cell treated with a chemical that inhibits DNA synthesis is treated to undergo the process of the cell cycle, the phase that will be affected is the S-phase of interphase.

Learn more about interphase at: brainly.com/question/17485110

#SPJ1

8 0
2 years ago
An increase in the greenhouse effect causes an increase in___
andriy [413]

The answer is option B "temperature." Greenhouse effect is the process of trapping the suns heat in the lower atmosphere. A increase of greenhouse effect would cause surface temperatures to rise.  Which then contributes to global warming because of melting the ice bergs in cooler areas on Earth and causing waters to rise and creating storms. It's not option A because the sun gives off heat or harmful radiant waves which doesn't increase carbon dioxide levels. Wouldn't be option D because it would contribute but it wouldn't happen without a increase of temperature. It also wouldn't be option C because oxygen isn't relevant in this case.

Hope this helps.

6 0
3 years ago
Which of the following describes the embryonic period? the period during which the zygote moves down to the uterus and begins to
muminat

Answer:

Option (2).

Explanation:

Zygote is formed by the fusion of the male and female gamete during the process of sexual reproduction. The zygote undergoes further development inside the female womb.

The embryonic period starts from the third week after the conception. The important organs and structure development occur during the embryonic period. The formation of three germ layers occur in this period.

Thus, the correct answer is option (2)

6 0
3 years ago
Whi is the relationship between an enzyme and it substrates compared to a lock key?
-Dominant- [34]

They say how an enzyme perfectly fits into its substrate is alike a "lock and key".

Only one specific enzyme can fit a specific substrate.

4 0
4 years ago
Anyone please banned my account​
zmey [24]

Answer:

you go to settings and tap on log out option to exit this account

7 0
3 years ago
Read 2 more answers
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