System) Question and answers 100%
correct 2025
How many chromosomes are in somatic cells? In gametes (germ cells)? -
correct answer 23 chromosomes/ 23
How many chromosomes are in zygote (fertilized cell; after the fertilization)? -
correct answer 46 chromosomes
What is karyotype? How are chromosomes arranged? What are autosomal
chromosomes and sex chromosomes, and how many are present? - correct
answer Karyotype: chromosomal characteristics of an individual cell
>The chromosomes are arranged in pairs in descending order of size and
according to the position of the centromere.
Autosomal Chromosome: Chromosomes that have the same (not identical)
genes on them. There are 22 pairs of autosomal chromosomes.
Sex Chromosomes: The last pair of chromosome that determines the sex (X
or Y)
How is the sex of a child is determined by the contributing gamete? What sex
chromosomes are present in male and female gamete? - correct answer
Females have XX
Males have XY
>Females always pass the X Chromosome