Two cell divisions: Meiosis
DNA replication: Mitosis
Chromosomes pair up: Meiosis
Spindle fibers form: Mitosis
One cell division: Mitosis
Cytokinesis: Meiosis
Four daughter cells: Meiosis
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The rigth answer is C (B ==> A ==> C)
The 3 images represent the key stages of mitosis.
Image B represents the beginning of the anaphase, where the chromosomes are aligned in the equatorial plate.
The image A represents the anaphase where the chromosomes are separated on both sides of the cell.
The image C represents the telophase or one can observe in the middle the formation of the division furrow to allow the cell to cut itself in two.
Answer:
The probability that their first child will have long fingers is 20%
Explanation:
<u>Available data</u>:
- long fingers are inherited with 80% penetrance
- L represents the dominant allele for short fingers
- l represents the recessive allele for long fingers
Cross) Two people heterozygous for long fingers mate
Ll x Ll
Gametes) 1/2 L 1/2l 1/2L 1/2l
Punnet Square)
L l
L LL Ll
l Ll ll
F1) 25% or 1/4 LL
50% or 1/2 Ll
25% or 1/4 ll
Long fingers are inherited with 80% penetrance, which means that 80% is the proportion of the population that expresses the phenotype long fingers. Hence, the probability that the first child in this cross will have long fingers is:
100% ------- 80%
25% -------- X = 20%
Answer:
A polygenic trait is one whose phenotype is influenced by more than one gene. Traits that display a continuous distribution, such as height or skin color, are polygenic.
Explanation:
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