Answer:
A: gene flow
Explanation:
I can not really explain it i just have this hunch let me know.
<span>D. 9 </span>
<span>Notice that diploid cells which 18 are the complete number of chromosome pair of the organism. This usually happens under cell divison –mitosis which process of replicating oneself to produce another like cell. Meiosis occurs in gametes, sex cells. Their respectively called spermatogenesis (sperm cells) and oogenesis (egg cells). These cell division –meiosis produces haploid cells, in which in words “half” from the complete cell chromosome number, hence, these </span>haploid cells<span> only produce half number or one set of chromosome (9) instead of the complete pair which in this case, 18.<span>
</span></span>
Explanation:
The half life is the time taken for a half of a radioactive material or substance to decay to half.
After the passing of the half-life, only half of the original material will remain. Now, let us follow the half-life sequence of this decay;
One half-life
Original: 1000cm
one half life = 500cm
Two half-lifes
Original: 500:
half-life = 250cm
Three half-lifes
Original : 250cm
Half life = 125cm
Four half-lifes
Original: 125cm
Half life = 62.5cm
Five half-lifes
Original: 62.5cm
Half-life = 31.25cm
Six half-lifes
Original: 31.25cm
Half-life = 15.625
learn more:
Half life brainly.com/question/1695370
#learnwithBrainly
Answer:
d. All of the listed statements are true.
Explanation:
Chromatin is presnet in the chromosome consist of protein and protein. histones are themajor proteins in chromatin that help in the compact packaging of the DNA in the cell nucleus.
<u>There are several problems posed by chromatin during transcription:</u>
- During transcription, protein can interfere with the chromatin structure at specific locations and interefere with its structure.
- Histone post-translation modifications (PTMs) regulate the structure of chromatin and also guide the remodeling enzymes which use the energy derived from ATP hydrolysis to reposition nucleosomes.
- During replication the chromatin structure rearrange itself in order to make the new DNA fit inside the nucleus.
Hence, the correct option is d.
