Each of these terms refers to a stage in the human menstrual cycle except <span>corpus phase</span>
Answer:
Sex Linkage
Explanation:
Sex linkage is the phenomenon in which the expression of genes depends on the gender of the organisms because genes for specific traits are located on the sex chromosomes of organisms.
What are sex chromosomes:
They are usually a pair of chromosomes present in higher organisms like humans and other mammals that combine during fertilization of male and female gametes and determine the sex of offspring. In humans they are X and Y chromosomes and when there is an XX offspring, she will e female and when there will be Xy offspring , he will be male.
Significance:
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Now there are some genes that are present only on sex chromosomes of the organisms like genes for beard are present in human Y chromosome of men, However,genes found on the X chromosome can be found in either males or females.
- Sex linked genetic disorders are very common in human males because males receive only one copy of X chromosome while females receive two copies. So only one copy of defective gene is enough for the expression of disease in males while in women two copies are needed if the trait is recessive.
- For example: There is a disease called hemophilia in which the blood is unable to clot even after minor injuries and can be life threatening.
- Hemophilia is an X linked recessive disorder and is an example of sex linked traits controlled by sex linked genes.
Hope it helps!
The role of groups in helping to fight against animal rights:
We can speak about our problem and keep it in court but animals are unable to share their problem. In this situation groups play vital role. There are several groups who work for animal right.
These groups have strong command in media. They tried to aware the people around them. Some of the organization is funded by government but some are not. These helping group talk about the pain and freedom of animal.
Cell is the smallest living structure unit of an organism.
Answer:
Its hard question, to be honest
