All of the following are examples of physical properties except

Explain how the independent alignment of homologs, and also crossing-over during the first meiotic division, each contribute to

BartSMP [9]

Answer: Homologous chromosomes are randomly distributed to daughter cells, this means different chromosomes segregate independently of each other. And they exchange segments of DNA during crossing over. This recombination creates genetic diversity because genes from each parent are exchanged.

Explanation:

Meiosis is a type of cell division that produces gamete cells, which are sex cells (egg and sperm)

Chromosomes that form a pair and are found together are called homologous chromosomes, and they are inherited from each parent. During prophase of meiosis I, the homologous chromosomes exchange segments of DNA in a process called crossing over. This recombination creates genetic diversity because genes from each parent are exchanged. <u>It results in new combinations of genes on each chromosome.</u>

After that, during the anaphase of meiosis I, the two chromosomes line up on the equatorial plane of the cell. Then, they are separated and each will go to a new daughter cell. So homologous chromosomes are randomly distributed to daughter cells, <u>this means different chromosomes segregate independently of each other.</u>

3 0

3 years ago

The cells involved in innate immunity, whose absence increases the chances of developing malignant tumors, are _____.

Alexeev081 [22]

Answer:

The correct option is B (natural killer cells).

Explanation:

Natural killer cells: They are defined as the type of cytotoxic lymphocyte which are critical to the innate immune system. The NK cells play an important role in to provide rapid response to tumor formation, virus infected cells, and acting after three days of infection.

While cancer cells die, they release some antigens, than these antigens are recognized by the immune system, and later they are presented on the immune cells which are known as antigen presenting cells. So, if these cells are absent than they increase the chances of developing malignant tumors.

4 0

3 years ago

In general, what determines

meriva

C: The arrangement and movement of the particles in the substance. Solid particles vibrate and are compact. Liquid slide past each other and are close together. Gas particles are fast moving and very spread out.

7 0

2 years ago

For a gene with a dominant allele T and recessive allele t, what proportion of the offspring from a TTxTt are expected to be hom

kiruha [24]

Homozygous being (TT): 50%

Heterozygous being (Tt): 50%

Hetero- different

Homo- the same