Answer:
D Smooth is dominant
Explanation:
If you cross two purebred plants, each one of the offspring will of one allele from each parent, so that means if the smooth one shows, it is dominant.
Answer:
Mutations rarely occur
Explanation:
Mutations are genetic changes, i.e., alterations in the DNA sequence. Generally, mutations have deleterious effects, but there are exceptions where mutations may confer an adaptive advantage in a given environment. Mutations are often deleterious, and thereby these genetic changes are rare events. In consequence, mutation rates, i.e., the frequency by which new mutations arise in an organism over time, are generally very low. Finally, mutations that arise only in germ cells can be inherited from a generation to the next generation, while somatic mutations cannot be inherited.
Humans are born with 23 chromosome pairs. Therefore there is a total of 46 chromosomes in the human body.
Answer:
Stomata and lenticels are two types of small pores, which occur in plants. Generally, they are responsible for the gas exchange
Explanation:
Stomata are pores found in the epidermis of leaves, stem and other organs that are used to control gas exchange. They mainly occur in the lower epidermis of leaves, whereas lenticels occur in the periderm of the woody trunk or stems and are lens shaped spots or pores.
