Human gametes are anisogamous, which means the reproductive cells are different in size. The male gamete, sperm, is smaller and motile while the female gamete, ovum, is larger and non-motile.
Human gametes are B. anisogamous. The term 'anisogamous' means that the gametes or the reproductive cells are different in size. In human beings, the male gamete, or sperm, is smaller and motile, while the female gamete, or ovum, is larger and non-motile. This is a typical characteristic of sexually reproducing species where there are distinct male and female gametes. Isogamous refers to species where the gametes are of equivalent size and morphology, and oogamous pertains to species where a tiny, motile sperm fertilizes a large, stationary ovum, which is primarily in many algae and fungi. So, among the given choices, human beings fall under the category of anisogamous.
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for by this DNA segment? [1]
If a mutation occurs, leaving 12 bases, the maximum number of amino acids that could be coded for by this DNA segment is 12.
"It is any change in the nucleotide sequence of a DNA."
it is a hereditary material composed of repeating units known as deoxyribonucleotide.
It is a three-nucleotide sequence in a DNA or RNA molecule that together code for an amino acid.
To learn more about mutation, DNA and amino acid here,
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Answer:
The answer would be .33
Explanation:
d
B. cnidarian
C. arthropod
D. roundworm
The correct answer is option D, Round worm
Roundworm belongs to the phylum Nematodes and some common characteristics of Nematodes are – they are small, slender , un-segmented, smooth and shiny. Roundworm has a round body just like a spiny –headed worm which do not have segments . Also they possess a body cavity known as pseudocoel in which the internal body organs lie and the body cavity is not lined with mesodermal cells.