Auxins promote cell elongation and cell division in stems.
Answer:
D
Explanation:
This involves a dihybrid inheritance I.e. two genes are being passed on. During meiosis, specifically, the Prophase stage, homologous chromosomes (similar but non-identical chromosomes received from each parent) line side by side. According to the question, one chromosome contains A and B alleles and its homologue, received by the other parent carries a and b alleles. This means that the diploid individual has a genotype AaBb for that gene.
According to Mendel's law of independent assortment, the alleles separate independently of one another into gametes. I.e. allele A and a separates into the gametes without affecting alleles B and b of the other gene.
Crossing-over, which is the exchange of chromosomal segment occurs between the two homologues. Hence, the exchange of chromosomal segments containing alleles in the individual will possibly produce four gametes with the genotypes: AB, Ab, aB, ab.
Cephalocaudal pattern of motor development
Answer:
Explanation:
The protons and neutrons huddle together in the nucleus, or center, of the atom, while the electrons spin around the nucleus. ... An element is a pure substance that is made from one single type of atom. For example, gold is an element that is made up of gold atoms. Oxygen is an element made up of oxygen atoms.
