During metaphase, the cell's chromosomes align themselves in the middle of the cell through a type of cellular "tug of war." The chromosomes, which have been replicated and remain joined at a central point called the centromere, are called sister chromatids.
Answer:
the red flower gene is dominant, white is recessive, the cross was RR x rr yielding 4 Rr crosses with red flowers.
Explanation:
The correct answers are sex hormones and thyroid hormones.
<h3>Hormones</h3>
In multicellular animals, a hormone is any member of a class of signaling molecules that is carried by complex biological mechanisms to distant organs to control physiology and behavior. The proper development of fungi, plants, and animals depends on hormones. The broad definition of a hormone (a signaling molecule that functions beyond from its point of production) allows for the classification of a wide range of molecular classes as hormones. Eicosanoids (such as prostaglandins and thromboxanes), steroids (such as oestrogen and brassinosteroid), amino acid derivatives (such as epinephrine and auxin), protein/peptides (such as insulin and CLE peptides), and gases are among the substances that can be termed hormones (e.g. ethylene and nitric oxide).
Growth is accompanied by two factors...
a) by increase in ___ b) increase in ___
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This is an example of balanced polymorphism. This occurs when the heterozygous individuals persist<span> in a population because homozygous individuals are less able to survive compared to the heterozygous individuals. In the case of </span>sickle-cell anemia, individuals with two copies of the β-globin sickle-cell allele develop sickle-cell disease and generally don't survive into adulthood, whereas individuals with one copy of the β-globin sickle-cell allele and one β-globin wild-type allele have functional red blood cells that are also resistant to malaria. We can expect this example of balanced polymorphism to occur in areas prone to malaria.
