1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sholpan [36]
3 years ago
15

Cell at metaphase of mitosis contains 20 sister chromatids, how many chromosomes will be present in a g1 cell? if a cell at meta

phase of mitosis contains 20 sister chromatids, how many chromosomes will be present in a g1 cell? 10 40 20 5

Biology
1 answer:
kumpel [21]3 years ago
4 0

Answer:

The correct answer would be 10.

The cell cycle can be divided into four phases namely gap 1 (G₁) phase , synthesis (S) phase, gap 2 (G₂) phase, and  mitosis (M) phase.

DNA (deoxyribonuceic acid) content is only replicated and doubled in the S phase. However, the chromosome number remains the same. It can be explained as the number of chromosomes remains the same (2n) but number of chromatids doubles (4n) after S phase.

The number of chromatids restores to 2n in daughter cells after completion of mitosis.

Hence, if number of chromatids in metaphase was 20 i.e. 4n then the number of chromosomes (2n) would be 10.

Hence, 10 chromosomes or 5 pairs of chromosome would be present in the cell during its G₁ phase.

You might be interested in
Determine the mass number of an atom if the given the number of protons and neutrons
REY [17]

Answer:

Add them!

Explanation:

The mass number of an atom is its total number of protons and neutrons

5 0
3 years ago
Why are mushrooms important to the food chain?
Arisa [49]
<span>It breaks down and decomposes dead animal and plants.</span>
3 0
3 years ago
Read 2 more answers
How do tussock moths obtain energy in cellular respiration?
s2008m [1.1K]
Tussock moths obtain energy by cellular resporation by the oxidation of food they consume. The food they consume is oxidised to synthesize special type of phosphate which is then stored as energy. The energy is utilised by their cells whenever needed. 
8 0
2 years ago
Most animals with backbones, vertebrates, have a similar body plan: skull, ribs, two pairs of limbs, tail. What does this sugges
daser333 [38]

The correct answer is E. Vertebrates are all related to a common ancestor

Explanation:

According to biology and evolution, organisms from different species but that share similarities in morphology (body structures) as well as in genetics often have a phylogenetic relationship which means they descend from the same organism or share a common ancestor. This applies to multiple taxonomical levels including classes such as mammals or birds as it has been proved each of this derived from a common ancestor. Therefore, the similarity in the body structure (morphology) in all mammals suggest vertebrates are related to a common ancestor and as they evolved from this, they share similarities not only in terms of morphology but also in genetics.

3 0
3 years ago
Read 2 more answers
Explain why competition between individual of the same species is more often more intense than competition between memories of d
puteri [66]
One big reason for this is because individuals of the same species often have to fight over shared resources (this means shared food and shared environment).

Because they fight over a limited amount of space and food, competition between individuals within one species can be present and very tough.

On the other hand, having members of different species also possibly means different territories and different food sources. A lion has no quarrel with dolphins, while it can have a lot of fights with lions from different prides (large group of lions).
8 0
2 years ago
Other questions:
  • what do you think might happen to the animals in an area if the plant diversity declines significantly?
    5·1 answer
  • If a strand of DNA of sequence 5’-AATAGCGCGGTATTC-3’ is replicated, which of the following accurately represents the newly synth
    6·2 answers
  • Of the three buffering mechanisms in the body, which is the strongest?
    7·1 answer
  • Which statement about natural selection is true
    13·1 answer
  • In a paramecium, the nucleus divides first and then the cytoplasm divides, forming two identical daughter cells. Which type of r
    13·2 answers
  • IPSPs are the result of: a. decreasing membrane conductance to potassium neurotransmitter b. binding to ligand-gated ion channel
    9·1 answer
  • Which of the following statements is true of nuclear fusion?
    15·2 answers
  • What might be the advantage of a thin leaf blade to the photosynthetic capacity of a leaf?
    12·1 answer
  • The term ____________________ describes the chemical substances that make it possible for messages to cross from the synapse of
    13·1 answer
  • What is a benefit of using active solar energy over utility-scale solar energy for a home?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!