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Hypothesize why you may not look exactly look like a brother or a sister if you have the same parents?
Wiki User
∙ 14y ago
This is because every person gets a set of chromosomes from one parent, and another set from another parent. That parent also got their chromosomes, one from each parent. Every human cell has 46 chromosomes, with the exception of gametes (sex cells). During meiosis, the 46 chromosomes replicate to 92. In prophase of meiosis I, crossing over occurs, when the homologous chromosomes exchange genetic material to create a recombinant. Furthermore, during metaphase I, there is independent assortment: the chromosomes from the parent A and parent B can be in any arrangement. When anaphase I occurs, the homologous chromosomes are pulled apart. The two cells will not be the same. When meiosis II takes place, the result is 4 gametes, each containing different genes due to crossing over and independent assortment. This happens in both parents. Therefore, when parent A and parent B have a second child, it is impossible for the second child to look exactly the same as the first child.
Wiki User
∙ 14y ago
Wiki User
∙ 9y agoThe combination of genes, even from two people, is almost infinite. You know that no two people have the same DNA, the same goes for siblings.
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The most obvious way the karyotypes of a sister and brother look different?
the sex chromosomes>>>>> the sister will have XX :D the brother will have XY
What if your two cats who are brother and sister one is gray and white with brown eyes and one is black and white with brown eyes what did the parents probably look like?
They would have probably looked the same as the two cats you have just described.
Did James Watson had sisters and brother?
One sister (at least), Elizabeth Jean Watson
You are positive n your mom is negative not sure what your dad is but your old brother n sister is negative can they be your full sister n brother or only half?
Upon conception, you receive an allele from your mother and one from your father. Yes these could be your full brother and sister because your father could be positive with a recessive negative allele and you could've received a positive from him whereas your siblings could've received the negative allele from him. You and your siblings can only get a negative allele from your mom because her two are negative.
Both you and your sister or bother have attached earlobes yet your parents have unattached earlobes unattached earlobes are dominant over attached earlobes what are the genotypes of your parents?
the gene is not shown in their chara ter
What relationship are your grandchildren to your sister?
Your sister-in-law is either the sister of your spouse or the wife of your brother. The parents of the sister of your spouse are also the parents of your spouse and so are your mother-in-law and father-in-law. The parents of the wife of your brother are not related to you.
How are you related to your brother-in-law's sister?
There is no relationship. She would be introduced as exactly that, "This is my brother-in-law's sister."
How i get an aunty?
When your parents have a brother, or sister.
What relation to you is your half brother's half sister?
Your half-brother's half-sister could be your full sister, or not related to you at all. For example, say your parents are Joe and Mary and your half-brother's parents are Mary and Steven. Say your half-brother's half-sister is Barbara. If Joe and Mary are Barbara's parents, then she is your full sister and your half-brother's half-sister. If Barbara's parents are Steven and Jane, then Barbara is not related to you (unless there is an adoption).
What is the difference between an uncle and a nephew?
An uncle is the brother of one of your parents, or the husband of the sister of one of your parents. A nephew is the son of your sister or brother.
What is the relationship between brother and sister?
A brother and a sister, both being children of the same parents, are siblings.
What are your parents aunt and uncle to you?
Your uncle is the brother of one of your parents or the husband of the sister of one of your parents. Your aunt is the sister of one of your parents or the wife of the brother of one of your parents. You are their niece (if you are a girl) or nephew (if you are a boy).
Why don't my parents do anything when my little sister and her friends annoy me?
Parents never tell my little sister/brother and her mates off when they are annoying me because parents either feel embarrased to shout at your little sister/brother in front of her friend or that they feel guilty telling off your little sister/brother's friend, what you have to do is tell your parents what your little sister and her friend did and hopefully they will tell your little sister/brother off for doing so, that's what happens when my little sister annoys me
Who is not your brother or your sister but is still a child of your parents?
yourself
Who are my son-in-law's parents to me?
your sister and brother in-laws
What do you call the son or daughter of a parents sibling?
The daughter of your brother or sister is your niece.
What is your relationship to the wife of the brother of your wife?
If your sister-in-law is the sister of your spouse, her brother is the brother of your spouse and your brother-in-law. If you are a woman, and your sister-in-law is the sister of your husband, then her brother could also be your husband.If your sister-in-law is the wife of your brother, then her brother is not related to you.no relation
