Answer:
2)chiasmata hold chromosomes together.
Explanation:
Chiasma (pl. Chiasmata): it is the point of contact, the physical union between two non-sister chromatids that belong to homologous chromosomes. In a given chiasma, an exchange of genetic material can occur between both chromatids.
1) is FALSE becasue recombination occurs between chromatids of homologous chromosomes, NOT between sister chromatids.
3) is FALSE because more than one recombination event can occur in a given pair of homologous chromosomes.
4) is FALSE becasue synaptonemal complex keeps homologous chromosomes together, NOT sister chromatids. Additionally, recombination occurs in prophase 1, long before anaphase 2.
<h3>Chromosomes are the thread-like structure found in the nuclei of both animal and plant cells. They are made of protein and one molecule of deoxyribonucleic acid (DNA). Organisms grow by undergoing cell division to produce new cells and replace older, wornout cells. During this cell division, DNA must remain intact and keep its even distributionthroughout the cells. Chromosomes are important to this process to ensure the DNA is accurately replicated.</h3>
Answer:
They were bound by nuclear fusion.
Explanation:
but i think answer is atom or compound
These stages are called: Piaget's four stages of intellectual (or cognitive) development . They are : a) Sensorimotor. Birth through ages 18-24 months.
b) Preoperational. Toddlerhood (18-24 months) through early childhood (age 7)
c) Concrete operational. Ages 7 to 12.
and d) Formal operational. Adolescence through adulthood.