Leptontene and zygotene, Biology

Assignment Help:

Leptontene:

  • The chromosomes becomes visible, shorten and thick.
  • The size of the nucleus increase.
  • The homologous chromosomes start getting closer to each other.

Zygotene:

  • Paternal and maternal chromosomes come together and pair up.
  • This pairing of homologous chromosomes is called synapsis.
  • This pairing is highly specific and exact point for point, but with no definite starting points.
  • The paired chromosomes are described as bivalents or tetrad.

Related Discussions:- Leptontene and zygotene

Name the different level of proteins, Name the different level of proteins ...

Name the different level of proteins There are 4 level of proteins:- a) Primary structure b) Secondary structure c) Tertiary structure d) Quaternary structure

Supernumerary or accessory chromosomes, SUPERNUMERARY OR ACCESSORY CHROMOSO...

SUPERNUMERARY OR ACCESSORY CHROMOSOMES Wilson (1905) discovered them in Matapodium insect. Very small Chromosomes present in nucleus in addition to normal number of Chr

Respiration, explain why expired air contain co2

explain why expired air contain co2

Which is not produced by the hypothalamus, Which of the following is NOT pr...

Which of the following is NOT produced by the hypothalamus? A) releasing hormones B) inhibiting hormones C) antidiuretic hormone D) oxytocin E) thyroid-stimulating h

What is S shaped incision, Q. What is S shaped incision? The S - shaped...

Q. What is S shaped incision? The S - shaped incision is indicated where a papilla needs to be developed and was first described by Palacci. This type of incision is essentiall

Explain about the glycemic index (gi), Explain about the Glycemic Index (GI...

Explain about the Glycemic Index (GI)? In the previous sections, we have studied that some carbohydrates are rapidly digested and absorbed, some are digested slowly while some

Effects on weather - air pollutants, Effects on Weather - Air pollutants ...

Effects on Weather - Air pollutants Dust, smoke and other suspended particulate matter reduce visibility. Fly-ash also affects visibility by intercepting and scattering solar

Define reagents required and methodology for fehling's test, Define Reagent...

Define Reagents required and Methodology for Fehling's Test? - Sugar solutions of glucose, fructose, galactose, lactose, maltose, sucrose, starch - Fehling A (Copper sulphat

Define the micronutrient deficiencies, Define the Micronutrient Deficiencie...

Define the Micronutrient Deficiencies? In the previous section, we learnt about macronutrient deficiencies i.e. protein energy malnutrition in children. We are now aware that t

Explain prosoma in details., Explain Prosoma in details. First tagma of...

Explain Prosoma in details. First tagma of a cheliciform consisting of the first six segments of the body. Appendages on the prosoma are involved in locomotion and feeding. Pro

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd