Question

random fertilization

fertilization, or the _______ _____ _____, also adds to the genetic_______. for fertilization to occur, an ovum can fuse with any of the millions of sperm present at the time of mating. since every ovum and sperm already have a unique combination of traits, fertilization increases this uniqueness further!

for example, in humans each male and female gamete can have one out of eight million chromosomal combinations possible due to independent assortment. a fusion of the two gametes will produce a zygote that can have any one out of the _______ _____ _______combinations possible!

Explanation:

Identificar conceptos clave

Using the Genetic Variation Mechanisms knowledge point
La fertilización es la unión de gametos masculinos y femeninos. Este proceso aumenta la variabilidad genética al combinar aleatoriamente dos genomas únicos.

Analizar el primer párrafo

Using the Genetic Variation Mechanisms knowledge point
La frase inicial define la fertilización como la unión de gametos: "Fertilization, or the fusion of gametes, also adds to the genetic variation."

• Primer espacio en blanco (tres palabras): "fusion of gametes" (fusión de gametos).
• Segundo espacio en blanco (una palabra): "variation" (variación).

Calcular las combinaciones del cigoto

Using the Independent Assortment knowledge point
Cada gameto humano tiene aproximadamente \(8.4 \times 10^6\) (u 8 millones) de combinaciones posibles debido a la segregación independiente.
La fusión de dos gametos independientes produce un cigoto con un número de combinaciones igual al producto de las combinaciones de cada gameto:

$$ 8,000,000 \times 8,000,000 = 64,000,000,000,000 $$

Esto equivale a 64 billones (en inglés, "64 trillion").

• Tercer espacio en blanco (dos palabras): "64 trillion" (64 billones).

Answer:

Random Fertilization

Fertilization, or the <blank>fusion of gametes</blank>, also adds to the genetic <blank>variation</blank>. For fertilization to occur, an ovum can fuse with any of the millions of sperm present at the time of mating. Since every ovum and sperm already have a unique combination of traits, fertilization increases this uniqueness further!

For example, in humans each male and female gamete can have one out of eight million chromosomal combinations possible due to independent assortment. A fusion of the two gametes will produce a zygote that can have any one out of the <blank>64 trillion</blank> combinations possible!