Answer:
The correct answer will be-pachytene, prophase I,
Explanation:
Tetrad is the structure formed during the meiotic type of cell division which produces four daughter cells.
The tetrad structure is seen under the microscope during the pachytene substage of prophase I.
The tetrad structure is formed when four sister chromatids are aligned together in a cell before the crossing over event or recombination has to take place. The tetrad formation allows the crossing over to take place in pachytene.
Thus, pachytene, prophase I is the correct answer.
Answer:
d) It is beneficial to the whole species, but not to all of the individual members.
Explanation:
This form of behavior raises the fitness of all the species at the expenses of each member.
Each member of the species performs altruistic behavior towards the queen and her progenies as it assist in creating of her nest to increase their generation numbers. Take for example, The workers do more of nurturing of the queen offspring instead of laying their own eggs. This altruistic behavior of workers promotes the further population of their species at the expense of them producing their own offsprings.
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Here is the complete question:
Some species of wasps are social. The queen starts a colony from scratch each spring. She builds a small nest, and lays and raises a group of female workers. The workers enlarge the nest while the queen continues to lay eggs. Unfertilized eggs become males that mate with newly hatched females. All of the wasps except the newly fertilized females die by the summer.
Which best describes this behavior?
a)It is beneficial only to the males that do not fertilize eggs.
b)It is beneficial only to the female workers that are not fertilized.
c)It is beneficial to each one of the individual colony members.
d)It is beneficial to the whole species, but not to all of the individual members.
Answer:
water is what earth is mainly made of. our bodies are also mainly water.
The ozone layer reflects the suns heat hottest layer in the atmosphere
Answer:
Cells are the basic unit of a living organism and where all life processes are carried out. Animal cells and plant cells share the common components of a nucleus, cytoplasm, mitochondria and a cell membrane. Plant cells have three extra components, a vacuole, chloroplast and a cell wall.
