Explanation:
The phase of Prophase I of meiosis is very long and divided into 5 subphases: Leptotene, Zygote, Pachytene, Diplotene, and Diakinesis. During a phase of the Diplotene, the degree of condensation is high, which allows individualizing the sister- chromatids that remain attached by the cohesins. The synaptonemal complex disintegrates, and from the centromeres begins a repulsion between homologous chromosomes, which remain associated only with the places where they occur as permutations.
These sites are called chiasmas (Greek, crossed) because they show the crossover of homologous chromatids. Chiasmas represent the cytological finding of the occurrence of permutation. The presence of at least one bivalent chiasm is essential to ensure the correct segregation of the homologous chromosomes in anaphase I.
Answer;
-They are polar
Explanation;
-A phospholipid is a lipid that contains a phosphate group and is a major component of cell membranes. A phospholipid consists of a hydrophilic (water-loving) head and hydrophobic (water-fearing) tail. Hydrophilic / hydrophobic layers restrict the passage of many substances.
-When phospholipids are mixed with water, they spontaneously rearrange themselves to form the lowest free-energy configuration. This means that the hydrophobic regions find ways to remove themselves from water, while the hydrophilic regions interact with water.
False, it would not accumulate enough differences to be considered different species.
Answer:
The correct answer is -
A) Fungal contraction to the oak tree
B) Less precipitation.
Explanation:
A biotic factor is the living thing present in an ecosystem and affects the system and leads to changes in the system. Here fungus is a living organism that influences the population size of the oak tree and the squirrels negatively.
An abiotic factor is a non-living thing condition or factor that affects the system and leads to the changes. In this case, the high temperature and the low rate of precipitation lead to changes in the size of the population.
Answer:
The answer is letter C.
Explanation:
The spliceosome can not excise RNA sequences bounded by an upstream 5' splice site and a downstream 3' splice site.B
Because it is not possible to produce an mRNA with the composition Exon 1 Intron AExon 3, it would require the use of two 3' splice sites.
