If D is dominant and d is recessive
1. Dd
2. DD
3. dd
<span>Men can produce sperm throughout their adulthood because their reproductive organs and glands are fully developed. During their childhood and adolescence the glands and organs are not functional for reproductive purposes.</span>
Answer:
they have diffrent part are shape
Answer:
consumers:
- fox
- buzzard
- rabbit
- mouse
- titmouse
- grasshopper
- butterfly
- snake
- frog
- dragonfly
- greenfly
- ladybird
producers:
- plantain
- berries
- grasshopper
- rabbit
- mouse
- titmouse
- snake
- frog
- butterfly
- ladybird
- greenfly
- dragonfly
Explanation:
I might be super wrong lol take this with a grain of salt eheh
Answer:
Tetraploid
Explanation:
Ploidy:
Ploidy is a biological term used for the presence of number of chromosome sets in a cell. Cells can be haploid (gametes), diploid (two chromosomal sets) and polyploid (more than two chromosomal sets).
Polyploidy:
A condition that entails the possession of more than two sets of chromosomes in the cell. Normal cells are diploid (2n) i.e they contain two sets of chromosomes, one from each parents. Polyploid individuals contain three (triploid, 3n), four (tetraploid, 4n), five (pentaploid, 5n) number of chromosomes and so on.
Under normal disjunction of chromosomes, a tetraploid cell will produce two diploid daughter cells each with two sets of chromosomes.
However, in the case of non-disjunction of all chromosomes in a tetraploid individual, two tetraploid daughter cells will be produced at the end of meiosis 1.
Non-disjunction of all chromosomes means that one daughter cell has received all 4 sets of chromosomes while the other is null i.e. contains zero chromosomal sets.
