Yes it is true, both the hair and nail plate are composed of keratin
So that all animals can be classified and accounted for. This is also used in dichotomy analysis in order to find out the species of an invasive plant or animal
Answer:
a network of proteins that holds homologues together.
Explanation:
Genetics can be defined as the scientific study of hereditary in living organisms such as humans, animals and plants.
The synaptonemal complex is a network of proteins that holds homologues (homologous chromosomes) together.
Generally, a synaptonemal complex (protein lattice) is formed between homologous chromosomes during mitosis and meiosis. Also, synaptonemal complex is important for the formation of the four sister chromatids referred to as tetrads.
Furthermore, the synaptonemal complex (protein lattice) has a tripartite structure which comprises of the following components;
I. SC protein-1 (SYCP1).
II. SC protein-2 (SYCP2).
III. SC protein-3 (SYCP3).
In conclusion, the synaptonemal complex plays a significant role in synapsis, recombination and chromosome pairing.
Answer:
A is the correct answer
Explanation:
the existed about 3.8to 4.0 billion years ago
