DNA contains the information to makeproteins, which carry out all the functions and characteristics of living organisms. ... In DNA, each protein is encoded by a gene (a specific sequence of DNA nucleotides that specify how a single protein is to be made).
Zoologist.
Park Naturalist.
Wildlife Rehabilitator.
Answer:
Explanation:
<em>Tim and Stephanie are devastated when they find out their newborn son has hemophilia- sex-linked recessive disease. Tim is shocked because he doesn’t have hemophilia, and figured if his son has it he would have gotten it from him. Is Tim correct in his thinking? Explain. Also explain what their genotypes must be in order for neither parents to have the disease but their son does. Create a Punnett square, and indicate the mother's and father's genotype.</em>
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First of all, the thinking of Tim is wrong. Hemophilia is X-linked and a male (XY) child always inherits his X chromosome from his mother. Hence, <u>the newborn son of Tim must have inherited the allele for the disease from Stephanie.</u>
Now, neither Tim nor Stephanie showed any symptom of hemophilia. It could only mean that Tim is totally free of the hemophilic allele while Stephanie is a carrier for it. Because a man has just one X chromosome, he can either be totally free of the abnormality or affected by it, no in-between. A woman has two X chromosomes, hence, she can be totally free, a carrier, or affected for the disease. Assuming the allele for hemophilia to be h, Tim's genotype would, therefore, be
while that of his wife would be
.
The Punnet's square analysis of the cross between Tim and Stephanie is indicated in the attached image.
Answer:
Sodium will let that electron go as soon as it can, which is why it generally forms ionic compounds such as NaCl. When sodium atom loses an electron from its outer energy shell, it becomes Na+ ion. D is the answer
Explanation:
Answer:
Produce and transport haploid gametes.
Explanation:
The reproductive system is a set of organs used to produce gametes and lead them outside the organism. Thus, this system is responsible for the production of gametes in the body of the animal or human, and in the case of male beings, their transfer to the body of the female in order to fertilize it and give way to reproduction, which is, in short, part of the tasks that every living being instinctively develops at some point in their life. The organs of the reproductive system are distinguished internally and externally. In humans, the external organ is the vagina for women and the penis for men, respectively.