Answer:
Two rounds
Explanation:
Meiosis is characterized by one round of DNA replication followed by two rounds of cell division, resulting in haploid germ cells. Crossing-over of DNA results in genetic exchange of genes between maternal and paternal DNA.
Ulna is the forearm bone involved in formation of elbow joint
The statement which is true about the inheritance of hemophilia is that it is a recessive trait on the X chromosome. Thus, the correct option for this question is C.
<h3>What is Hemophilia?</h3>
Hemophilia may be defined as an inherited bleeding disorder in which the blood does not clot properly. This can lead to spontaneous bleeding as well as bleeding following injuries or surgery.
Hemophilia is significantly caused by the lack of clotting factor VIII or IX in the blood. In most cases, hemophilia is passed down through families (inherited). Most of the time, it is passed to male children. Several women in the family were carriers of the allele for the disorder, only men ended up actually expressing the disorder.
Therefore, the statement which is true about the inheritance of hemophilia is that it is a recessive trait on the X chromosome. Thus, the correct option for this question is C.
To learn more about Hemophilia, refer to the link:
brainly.com/question/14203344
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Answer:
The pressure differences on either side of the valve.
Explanation:
The heart valves open and close passively because of pressure differences on either side of the valve. When pressure is greater behind the valve, the leaflets are blown open and the blood flows through the valve. However, when pressure is greater in front of the valve, the leaflets snap shut and blood flow is stopped.
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Least dense to most dense: gas, solid, liquid.
