They separate during meiosis I is true of tetrads.
Explanation:
In Prophase 1, tetrads are formed. Each chromosome has two sister chromatids. When two homologous chromosomes align for crossing over they have four parts and these are termed tetrads.
When homologous chromosome separate tetrads get broken. Tetrads are not present in mitosis because no crossing over takes place in mitosis.
In Anaphase 1 homologous chromosome separate by getting pulled by spindle fibres forming two haploid cells and tetrads get separate.
Answer: Hormone
Explanation:
A hormone is a chemical substance produced in small quantities by an endocrine gland (such as thyroid gland in the neck) and carried in the blood to another tissue in the body where it acts as a messenger to control itsfunction.
Examples of hormones include:
- Thyroxine produced by the thyroid gland in the neck
- Testosterone produced by the testis in male humans
- Oestrogen produced by the ovary in female humans
Answer: on number 4 ints fact
Explanation:
Gene<span> silencing is a term used to describe the regulation of </span>gene<span> expression.</span>
Answer by YourHope:
Hi! :)
Explain the cellular functions that occur when antibiotics attack a bacteria cell.
When antibiotics attack a bacteria cell, the growth of the bacteria is stopped and the bacteria will not be able to divide and spread all over the body through the blood!
:)
