Spermatogenesis is the process in witch spermatozoa are produced from male primordial germ cells by way of mitosis and meiosis.
Oogenesis is the process by which the female gametes, or ova, are created.
The spread of a pathogen from person to person depends on the measurement of the contact, the point of contact and longevity of contact with a diseased person.
The answer is False. Spermicidal or Spermicides are
chemicals that is used to kill sperm inside the vagina. Spermicides may be
found in different forms, such as jelly, foam, suppository and film. Some
spermicides works alone, while others require insertion or pre-insertion.
Spermicides are used in combination with other methods such as the use of
condoms. Though individuals claim to use spermicides alone, they are only 76
percent effective, sometimes pregnancy may still occur. Which is why it is
advised to use other protective materials, such as condoms.
The answer is D- Individual birds with the mutation will be more likely to survive and reproduce than birds without the mutation.
This is called Natural Selection.
Mutation result in changes in the nucleotides sequence in genes, so a mutation of the Pitx1 gene will change the nucleotide sequence in the gene.
<h3>What is a mutation?</h3>
A mutation refers to a change that occurs in the sequence of nucleotides in DNA molecules.
Since gene are regions of a DNA molecule that codes for a protein or gene product, a mutation will affect the gene product.
Therefore, for the Pitx1 gene, a mutation will change the nucleotide sequence in the gene.
Learn more about mutations at: brainly.com/question/2570717