Answer:
When we are outside on a sunny day , we can see how our shadows change throughout the day. The position of the sun affects the size of a shadow. A person or object blocks more light when the sun is low in the sky. More blocked light makes shadows longer. This makes shadows shorter.
Mitosis and Meiosis / Cell Division
Answer:
C. 1,024
The answer can be worked out using 2^pairs of chromosomes
Explanation:
Imagine there were <u>two</u> pairs of chromosomes:
- A paired with B
- C paired with D
A gamete could have the following combinations:
Therefore, with two pairs of chromosomes, there are 4 (2²) possibilities
Now, Imagine there were <u>three</u> pairs of chromosomes:
- A paired with B
- C paired with D
- E paired with F
A gamete could have the following combinations:
- A + C + E
- A + D + E
- A + D + F
- A + C + F
- B + D + F
- B + C + F
- B + C + E
- B + D + E
Therefore, with three pairs of chromosomes, there are 4 (2³) possibilities
For 10 chromosomes - there are 2¹⁰ possibilities. 2¹⁰ = 1024
The gametes that are produced contain half the actual number of chromosomes that are found in the organism.
Option C
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Explanation:</u></h3>
The gametes are the units of sexual reproduction. These gametes are formed from the gamete mother cell by the process of meiosis. Meiosis actually convert a diploid cell into a haploid cell by reducing the chromosome number to half. So the genetic information of the gamete is also half to that of the other cells of that organism.
When two gametes fuse, they actually complete the full set of chromosomes and form a new organism which contains the characters according to the dominant and recessive basis. So offsprings are not completely similar to any of the parents.
