Answer:
The behavior of chromosomes during meiosis and fertilization is responsible for most of the variation that arises in each generation. Three mechanisms contribute to genetic variation arising from sexual reproduction: independent assortment of chromosomes, crossing over, and random fertilization.
Answer and Explanation:
The possible genotype and phenotype are as follows
Genotype Phenotype
BbR∧ - Barbed and not resistant to pesticide
BBRR - Barbed and not resistant to pesticide
bbR∧ - Smooth and not resistant to pesticide
bbRR - Smooth and not resistant to pesticide
bb∧∧ - Smooth and resistant to pesticide
Bb∧∧ - Barbed and resistant to pesticide
BB∧∧ - Barbed and resistant to pesticide
<span>hromoplast is the generic term but is usually used to refer only to those plastids that do not have chlorophyll.</span>
The layer of the sun is in three equally side the sun the moon and the galaxy
Answer:
The platypus serves as a 'bridge' animal between nonmammals like birds and reptiles, which maintain their testicles in their body cavity, and placental and marsupial mammals, which hold their testes in an external scrotum."