an egg cell has a haploid nucleus so it has half the number of dna because it fuses with a sperm cell to have the full amount of dna.
an egg cell has 23 chromosomes and a sperm cell has 23 chromosomes.
they both have half the amount of dna to form a zygote
The answer is B). Genetic screening basically testing for the genetic traits of an individual. Therefore the answer would be B).
C. The answer should be c, seeing as how bacteria die under high heat.
One reason would be the increased chance of Down syndrome
