When an egg and a sperm "unite", they form a zygote, which has two gender chromosomes. However, eggs and sperm by themselves only have one. Eggs only ever have X chromosomes. Sperm can either have X or Y chromosomes. If an X sperm enters the egg, it will be XX or female. If a Y sperm enters the egg, it will be XY or male.
This isn't really taking into account chromosomal disorders such as XXY etc where things don't go quite as expected, but that's the basics of things.
It's pretty random which sperm will "win", there's no real way to determine that. I think studies have shown that in some families/men female sperm are dominant, or male sperm, so that families sometimes have a run of girls before having a boy, etc.
When a male and and a female 'mix up genes' they create an embrio that inherited the genes from there parents. The sperm and egg of the posterity's parents contain chromosomes (genes) that can combine to make the baby. Without the posterity's parents chromosomes, it cannot form an embrio that will eventually turn into a baby.
When the parents have sex, the mother's gamete has 23 chromosomes and the father's gamete has 23 chromosomes. Together they create a zygote which has 46 chromosomes.
These 46 chromosomes have traits from both parents and will both contribute to the child's features.
Each parent passes on half of their genetic material, or DNA to their offspring. The actual traits that the offspring will inherit depends upon which genes are passed on, the combination of those genes, and whether the genes are dominant or recessive.
Each parent provides approximately half or their genome to their children. This dictates a lot of their children's physical characteristics, although the way inherited traits are shown is very complex.
Half the number of chromosomes
2 parents
That is impossible, as each parent contributes 23 genes. You could not be born without 46 genes.
Traits can be determined by a single gene or by multiple genes. Many genes influence the regulation of others and sometimes even hide the existence of some. There isn't an answer to this question.
False
Each parent has two genes with two alleles so there are four alleles.
Theoretically speaking, we get 50 percent of our genes from our father and 50 percent of our genes from our mother. Our parents themselves get genes in the same proportion. So basically, you get 25 percent genes from each grandparent because your parent has 50 percent genes from each grandparent and then you get 50 percent of that 50 percent, that is, 25 percent.
That is impossible, as each parent contributes 23 genes. You could not be born without 46 genes.
Traits can be determined by a single gene or by multiple genes. Many genes influence the regulation of others and sometimes even hide the existence of some. There isn't an answer to this question.
23 from each parent... that's a total of 46 genes from both parents :D
Genes and chromosomes.
2(:
genes
Parent
genes
Parent. Organisms have two alleles of each gene, one from each parent.
Yes
genes 23 from each parent
False