Chromosomes
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What is an autosome?
A non sex chromosome
What is the total number of chromosomes in human (not sex) cells?
46 chromosome
How many pairs of chromosomes are there in human (non sex) cells?
23 pairs
What does haploid number mean? What does diploid number mean?
A diploid cell has two complete sets of chromosomes, one set from each parent. Therefore humans have 46 chromosomes in diploid cells. A haploid cell has one complete set of chromosomes. In human haploid cells (sperm and egg) it contains 23 chromosomes.
What does homologous chromosomes mean?
Pairs of chromosomes that have the same genes in the same location, with one coming from each parent.
What is a karyotype?
Someone’s complete set of chromosome. A karyotype is carried out to gain an understanding of the chromosomes present in an organism cells.
What abnormality results in down syndrome and what is its alternative name?
Down syndrome (trisomy 21) can occur due to a person having three copies
How is biological sex determined?
Through the X and Y chromosomes given from the parents. The egg always provides an X chromosome, whereas spermicide provides either a X or Y chromosome. Therefore, the male determines the sex.
What sex chromosomes do biological males and females have?
Male= XY Female= XX