Question

Identify the inheritance mode of each condition by using the labels to complete the table. labels can be used once, more than once, or not at all.

Answer 1

As question lack major information of pedigree i have attached it in this answer for better understanding.

Answer:

Condition A is autosomal recessive

Condition B is a X- linked recessive

Explanation

We analyze the pedigree by checking the mode of inheritance of each condition.

Question arises here that is conditions are dominant or recessive?

Explanation of arose question

As we know that the requirement for dominant condition is that an affected individual must have one affected parent.

While on the other hand, two healthy parents gave birth to affected child which means this condition is recessive. therefore, from the pedigree we get to know that Recessive condition is the case for both conditions A and condition B.

Another question arises here is the condition is X-linked of autosomal?

Explanation of arose question

As we know from the rules of genetics that if two healthy parents gave birth to affected daughter then it’s an autosomal recessive condition. From the pedigree we see that this is the actual case of condition A.

While on the other hand, if two healthy parents gave birth to affected son this condition will be X-linked. From the pedigree this is the case for condition B.

Answer 2

Since no table is given, I will explain how genes are inherited. After Mendel’s discoveries were accepted, scientists realized that traits passed to offspring were the result of genes being passed from parents to offspring. This is an example of the law of inheritance. The genes that are passed down from the parents are being shared by the offspring. It can be shown if the trait is recessive or dominant from the parents’ gene. Chromosomes are inherited from the parents. One chromosome from each of 23 pairs came from each of the parents. The two chromosomes of a pair (except for the sex chromosomes) contain the same genes, but the genes have small differences. The X and Y Chromosomes determine the organism’s sex. One chromosome pair - the sex chromosomes - is unique. Typically females have two X chromosomes and males have an X and a Y. Mothers always pass an X chromosome on to their children. Whether the father passes on his X chromosome (leading to a pair of X chromosomes) or his Y chromosome (making a mixed set) determines your sex.