Answer:
b, a, d, c, e
Explanation:
The lac operon is called lactose operon is a cluster of genes with a promoter. The bacteria uses lactose as the source of energy by the proteins coded by genes. This is present in prokaryotes.
The regulatory gene codes for repressor protein. The repressor binds to lactose and prevent its binding to operator. In the absence of lactose repressor gets activated and binds with operator. Thus, RNA polymerase is prevented from binding the promotor. The transcription of genes inhibited. Thus correct order is b, a, d, c, e.
This phenomenon is referred to as receptor situations.
This is because the Crossing over during meiosis cause is a homologous chromosomes to exchange alleles resulting in new combos of alleles in the offspring. Crossing over occurs between prophase 1 and metaphase 1 and is the process where homologous pair up with each other and exchange different segments of their genetic material to form recombinant chromosomes. It can also happen during mitotic division, which may result in loss of heterozygosity.
i think its 2 or 3 hope this helps you
The correct order is:
5: formation of bone collar around hyaline cartilage model
2: cavitation of hyaline cartilage within the cartilage model
3: invasion of internal cavities by periosteal bud and spongy bone formation
1: formation of medullary cavity and appearance of secondary ossification centers
4: ossification of epiphyses; hyaline cartilage remains at epiphyseal plates and articular cartilages
