In a beetle species the red color is dominant over the white color. what is the genotype of any red beetle resulting from this species? 1points a red and white alleles present on one chromosome b red and white alleles present on two chromosomes c a red allele present on both homologous chromosomes d a red allele present on at least one of two homologous chromosomes

Option D, A red allele present on at least one of two homologous chromosomes

Explanation:

It is given that in a beetle species the red color is dominant over the white color. Thus, in order to have a offspring of red color at least one of the two homologous chromosome must have red allele.

This can be further understood from the cross below -

Suppose one of the parent is homozygous red  with genotype "RR" and other parent is homozygous white with genotype "rr"

If a cross is carried out between the two parents, the following offsprings will result -

RR x rr

Rr, Rr, Rr, Rr

Since there is no co dominance, thus the dominant allele will express itself completely and hence at least one of the homologous chromosome of  offspring must have red color allele.

answer: the correct option is d. enzyme

lactase and carbonic anhydrase are the examples of enzymes.

lactase is an enzyme, which is present in the small intestine of mammals. it in the digestion of the disaccharide, lactose ( milk sugar) by converting it into two monosachharide, which are glucose and galactose.

carbonic anhydrase is present in the red blood cells. this enzyme plays significant role in the transport of co₂. it in the conversion of co₂ and h₂o into carbonic acid, which is then dissociated into bicarbonate ions and hydrogen ions.