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
IgorLugansk [536]
3 years ago
5

Saccharomyces cerevisiae is a diploid yeast species that can reproduce either sexually or asexually. An experiment was performed

to induce mitotically dividing S. cerevisiae cells in G2 to undergo meiosis. Which of the following best describes the steps these cells will follow to form gametes?
A. The first division will result in crossing over between homologous chromosomes, and the second division will reduce the original number of chromosomes by half in the daughter cells.
B. The first division will reduce the number of chromosomes by half for each daughter cell, and the second division will result in each daughter cell having one-fourth of the original number of chromosomes.
C. The first division will move single chromatids to each daughter cell, and the second division will double the number of chromosomes in each daughter cell.
D. The first division will reduce the number of chromosomes by half for each daughter cell, and the second division will move single chromatids to each daughter cell.
Biology
1 answer:
Savatey [412]3 years ago
6 0

Answer:

D. The first division will reduce the number of chromosomes by half for each daughter cell, and the second division will move single chromatids to each daughter cell.

Explanation:

Gametes are formed by meiosis in diploid gamete mother cells. During gamete formation, the gamete mother cell in the yeast would undergo meiosis I. During first division (meiosis-I), the process of crossing over during prophase-I creates genetic variations and movement of homologous chromosomes to the opposite poles during anaphase-I reduces the chromosome number to half in each daughter cell.

Two daughter cells are formed by the end of meiosis-I each of which enters meiosis-II. Splitting of centromere and separation of sister chromatids during anaphase-II of meiosis-II results in the movement of single chromatids to the opposite poles of the cells.

You might be interested in
Igneous rocks turn into sediments through the process of ______.
dalvyx [7]
B.) crystallization. Igneous rocks turn into sediments through the process of crystallization.
6 0
3 years ago
Slicon it position on the periodie table and its chemical properties based on that position​
Inessa05 [86]
It is quite hard to say
3 0
1 year ago
A bacterial sample has a cell density of 1.85 x106 CFU/mL. What plate dilution should yield a countable plate? Which two dilutio
insens350 [35]

Answer:

Explanation:

Bacterial count in stock- 1.85x10^6 cfu/ml

Dilution methods

Take 100 uL or (0.1ml) from stock and add to 900ul (0.9ml) saline and mixed it- this makes 10^1dilution.

Now take 100ul from 10^1 dilution and add to next 900ul saline this is 10^2 dilution, similarly do upto 10^5 dilution.

Then take 100ul from 10^ 4 and 10^5 dilution seperately and plate on LB agar plate seperetely and count the colonies.

Cfu/ml formula= (No.of colonies x dilution factor)/0.1 ml

So suppose, 18 colonies formed on 10^4 dilution then total no. Of cells in stock will be 18x10^4/ 0.1= 18x10^5 cfu/ml.

If we dilute 10^4 or 10^5 that's leads to colony count of 18-19 colonies on 10^4 dilution while 2 colonies should come on plate of 10^5 dilution.

7 0
3 years ago
Help me please biology 1
Ganezh [65]

Answer:

50%

Explanation

          b       b

 B  |    Bb    Bb

 b  |    bb     bb

3 0
2 years ago
In which type of exercise would fat reserves be used to create ATP?
zalisa [80]
I believe it's aerobic exercise.
3 0
3 years ago
Read 2 more answers
Other questions:
  • How does respiratory system relate to respiration making ATP?
    5·1 answer
  • The theory of endosymbiosis suggests that ______.
    13·1 answer
  • Is an aphid a producer
    5·1 answer
  • If one species in a community dies out moves, the community will
    13·1 answer
  • What is a disadvantage of the circuit pictured to the right? (10b;DOK 1) A. The addition of more light bulbs decreases the flow
    8·1 answer
  • Nucleic acids are made up of repeating units called:
    12·1 answer
  • (food chains, food webs, and energy pyramid
    8·1 answer
  • What name is given to the process in which pre-mrna is edited into mrna?
    9·1 answer
  • What is the codon for start?
    10·1 answer
  • _____ is an interdisciplinary field that includes science, technology, engineering, and mathematics.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!