Option (B) specialised phagocytic cells
Answer:
Sperm cell
Explanation:
Because it is a reproductive cell and in one of the stages of foetus growth is meiosis so this cell undergoes meiosis to pass that stage
Q. Name the type of membrane channel that opens in response to chemical binding and is found in dendrites of some sensory receptors like pain receptors, and in the dendrites and cell bodies of interneurons and motor neurons.
A. Ligand-Gated Channels
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I hope that helps you out!! Any more questions, just ask!!
Answer and Explanation:
<u>Available data:</u>
- New breeding occurred between two different cats.
- Both cats were heterozygous hairy cats,
- One parent loved sinks and the other parent disliked sinks.
Let us say that:
- the gene for the cat hair trait is H, being "H" the dominant allele expressing hair, and "h" the recessive allele expressing hairless.
- the gene for the sinks-liking trait is S, being "S" the dominant allele expressing sinks-liking, and "s" the recessive allele expressing sinks-desliking
If both cats are heterozygous for the hair trait, then their genotypes would be Hh in both animals.
One of the cats likes sinks, so its genotype would be S-. The "-" symbol means that we do not know if this is a homozygous or heterozygous animal. The other cat disliked sinks, so its genotype for the trait would be ss.
Cross: HhS- x Hhss
Gametes) HS hS H- h-
Hs hs Hs hs
Punnet square: HS hS H- h-
Hs HHSs HhSs HHs- Hhs-
Hs HHSs HhSs HHs- Hhs-
hs HhSs hhSs Hhs- hhs-
hs HhSs hhSs Hhs- hhs-
a) List the genotype of each parent based on the information above.
Parent 1: HhS- ---> there are two possibilities: HhSs or HhSS
Parent 2: Hhss
b) Determine how many of the potential offspring would be hairless and love sinks
If parent 1 is HhSs, the potential offspring that would be hairless and sinks-loving would be 2/16=1/8. Its genotype would be hhss.
HS hS Hs hs
Hs HHSs HhSs HHss Hhss
Hs HHSs HhSs HHss Hhss
hs HhSs hhSs Hhss hhss
hs HhSs hhSs Hhss hhss
But if parent 1 is HhSS, there would not be any individual hairless and sinks-loving. All of them would be heterozygous for sinks-liking.
HS hS HS hS
Hs HHSs HhSs HHSs HhSs
Hs HHSs HhSs HHSs HhSs
hs HhSs hhSs HhSs hhSs
hs HhSs hhSs HhSs hhSs
Answer:
the amount of genetic variation in a population.
Explanation:
The proportion of the members of a population possessing beneficial allele due to natural selection will increase with time while the proportion of those possessing a harmful allele will decrease with time. After many generations, all the members carrying the harmful allele will die out leaving only those with the beneficial allele. The result is a genetic variation of the population with time.
