Living on land means reptiles can't rely on absorbing oxygen through their skin like amphibians. All reptiles have lungs they use for breathing -- even those who live most of their lives near or in water, such as crocodiles, must surface to breathe. Lungs allow reptiles to venture far away from aquatic environments.
Answer:
Genotype of the offspring: 4 CC is equal ratio. Phenotype will be 4 yellow cocoons. (CC)
Explanation:
The inheritance of cocoon color in silkworm is a classic illustration of mono-hybrid cross. Mono-hybrid because the color of cocoon is determined by single gene. The yellow color of cocoon is dominant and the homozygous dominant allele is represented as CC. While the white color of cocoon is represented as cc homozygous recessive alleles. As per punnett square method the offspring cocoon color will follow the above mentioned genotypic and phenotypic ratios respectively.
Their function is to prevent water getting out and stopping
Answer:
it ensures the transmission of traits from one generation to the next.at thesame time,it is a key process that introduces genetic variation into the traits that offsprings inherent from their parents.