Answer:
Phenotypic ratio= 1 Brown : 1 Gray
Explanation:
Genotype of brown snake= BB
genotype of gray snake= Bb
A cross between brown (BB) and gray (Bb) snake obtains progeny in following phenotypic ratio= 1 Brown : 1 Gray
Here, the heterozygous parent, gray snake (Bb) forms two types of gametes in 1:1 ratio while the homozygous dominant parent, brown snake (BB) forms only one type of gamete.
Answer:
A. Integumentary system
Explanation:
The integumentary system consists of the skin,hair and nail. This system consists of the largest organ in the body. The skin helps in protection against pathogens by shielding the internal body system from external objects.
The skin also helps in Vitamin D production through sunlight.
It also helps to prevent dehydration through regulation of water loss.
Automatically region nervous system
The relative time of divergence from a common ancestor can be estimated by comparing the nucleotide/protein sequence.
<h3>What is sequence homo-logy?</h3>
In molecular biology, sequence homo-logy means the degree of similarity between sequences due to a common ancestor.
A sequence is a given fragment of a single DNA strand where nucleotides are arranged in a specific linear order.
Divergence or separation between lineages is directly proportional to the level of sequence homo-logy.
In conclusion, the relative time of divergence from a common ancestor can be estimated by comparing the nucleotide/protein sequence.
Learn more about sequence homo-logy here:
brainly.com/question/9640986
#SPJ1
