26 6월 Explain the gender devotion process inside Carica papaya
- Procentric synapsis: Pairing starts throughout the center of chromosome.
- Proterminal synapsis: Pairing initiate on telomeres.
- Random synapsis: Combining may start at any place.
Question 40. Just how and you may in which chiasma is formed? Answer: Immediately after tetrad creation, crossing-over happens in the new pachytene stage. The newest non-cousin chromatids of one's homologous partners create a message at one to or more affairs. Such things out-of get in touch with between non-sis chromatids regarding homologous chromosomes are called Chiasmata (singular-Chiasma). On chiasma, cross-shaped otherwise X-designed formations are molded, where cracking and rejoining of one or two chromatids exist. This contributes to mutual exchange off equal and you can relevant areas between him or her.
Answer: Carica papaya, 2n=thirty six (Papaya) have 17 sets out-of autosomes and another collection of intercourse chromosomes
- Single-cross more than: Creation regarding single chiasma and you will relates to just several chromatids out-of four.
- Twice cross: Development out of several chiasmata and you can comes to 2 or three otherwise the five strands.
- Numerous cross: Creation in excess of one or two chiasmata and you may crossing-over frequency is actually extremely lower.
Question 42. What is actually recombination? Which is the extensively accepted make of DNA recombination? Answer: Crossing over results in the forming of the brand new mix of emails into the an organism called recombinants.