CATDOLL : CATDOLL: Are French oysters diploid or triploid?

1. Are French oysters diploid or triploid?

French oysters are triploid. According to the relevant information, triploid oysters have three sets of chromosomes and are excellent breeding varieties.

2. In summer, which one tastes better and sells better, the triploid Fujian oysters or the diploid Rushan oysters?

The answer to the question "who sells better" is only known by the oyster farmers in Fujian and Rushan, and the answer cannot be given here.

In terms of taste, triploid oysters are better than diploid oysters in summer because summer is the season for diploid oysters to reproduce and they will spurt, which greatly reduces the taste, while triploid oysters are infertile and will not spurt, so the meat is definitely fuller and firmer.

However, Rushan oysters are cold water oysters, while Fujian oysters are warm water oysters. Cold water oysters are more crisp and have a better taste than warm water oysters, so if they are both diploid or triploid, the taste of Rushan Ba ​​Chiyun oysters should be better than that of Fujian oysters.

If we compare the triploid Fujian oysters and the diploid Rushan oysters in summer, the result is hard to say. The triploid Fujian oysters may taste a little better, after all, they have the advantage of variety.

Of course, many Rushan oysters in summer are triploid oysters, not diploid oysters, which can also indirectly prove this point!!!

The seasons are different. Rushan oysters are abundant in winter. In Fujian and other places, oysters are very abundant in summer.

The seasons are different. Rushan oysters are abundant in winter. In Fujian and other places, oysters are very abundant in summer.

The seasons are different. Rushan oysters are abundant in winter. In Fujian and other places, oysters are very abundant in summer.

Everyone has different tastes. People in the north prefer the delicious oysters from Rushan.

3. Lianyungang, Jiangsu: 10,000 mu of caged oysters begin harvesting

On May 23, 2021, fishermen sorted freshly harvested caged oysters at the Liandao Fishing Port in Lianyun District, Lianyungang. Recently, more than 10,000 mu of triploid oysters cultured in Liandao Village, Lianyun District, Lianyungang City began to be harvested, and fishermen were busy rushing to harvest and transport them ashore for sale. The village has fully implemented efficient cage farming technology and continued to expand the scale of offshore farming. More than 10,000 mu of caged triploid oysters are cultivated, and the annual output value is expected to reach 35 million yuan. Oyster farming has driven fishermen to switch from offshore fishing to "cage farming", promoting increased production and income. Photo by Wang Chun, China News Service

On May 23, 2021, fishermen hoisted freshly harvested caged oysters at the Liandao Fishing Port in Lianyun District, Lianyungang. Photo by Wang Chun, China News Service

Fishermen sorted freshly harvested caged oysters at the Liandao Fishing Port in Lianyun District, Lianyungang, on May 23, 2021. Photo by Wang Chun, China News Service

Photo by Wang Chun, China News Service

Photo by Wang Chun, China News Service

Photo by Wang Chun, China News Service

Photo by Wang Kongchanchun, China News Service

4. In order to solve the problem of the decline of meat quality of diploid common oysters due to spawning in summer, people have cultivated triploid oysters.

D

Inhibiting the first cleavage results in chromosome doubling, and the resulting individual is tetraploid. Option A is wrong. Using radiation to damage the nucleus of the mitotic cell to stimulate the sperm, the resulting individual is haploid. Option B is wrong. Option C is a diploid obtained by transplantation. Option C is wrong. The polar body contains one chromosome set, and the fertilized egg contains two chromosome sets. The fertilized egg with mitotic cells and polar bodies contains three chromosome sets, and the resulting individual is triploid. Option D is correct.

This question tests the operation of polyploid breeding methods. Inhibiting the first cleavage leads to chromosome doubling, and the cultivated individual is tetraploid, so option A is wrong. Using sperm with gamma rays to destroy the nucleus to stimulate the egg cell, the new individual formed is haploid, so option B is wrong. The individual obtained by nuclear transplantation in option C is diploid, so option C is wrong. The polar body contains one chromosome set, the fertilized egg contains two chromosome sets, and the fertilized egg containing polar bodies contains three chromosome sets. The developed individual is triploid, so option D is correct.

The individuals cultivated by inhibiting the first cleavage and causing chromosome doubling are tetraploids, so option A is wrong. The individuals formed by stimulating the oocytes with spermatozoa that destroyed the nucleus with radiation are haploids, so option B is wrong. The individuals obtained by transplantation in option C are diploids, so option C is wrong. The secondary oocytes after fertilization contain three sets of chromosomes. The individuals formed by using chemical reagents to prevent the secondary oocytes from releasing their chromosomes and developing directly without division are triploids, so option D is correct.

c

This question actually tests the problem of gene free nucleus brother state combination. The modification is the same as the triple dust high body seedless watermelon, but the method is different, the principle is the same

C