Answer:39 chromosomes
Explanation; meiosis is a form of nuclear division that produces gametes with half the number of chromosomes in the parent cell.it involves two successive divisions to produce four daughter cells.meiosis occurs only in reproductive cells.
In this case,the dog has 39 pairs of chromosomes,which is 78 chromosomes.it would undergo meiotic division to produce the half number of chromosomes,which is 39 chromosomes.this 39 haploid chromosomes are contained in the sperm cells or in the egg cells.
When the egg and sperm fuses,the diploid number of chromosomes is restored.
Answer:
a video that shows penguin species that have different mating dances
Explanation:
The question is incomplete as it does not have the options which are:
- a video that shows a large river that has penguin populations on both sides
- a video that shows penguin species that have different mating dances
- a video that shows a penguin that is laying eggs
- a video that shows penguins in a tidal pool and an open ocean
Answer:
a video that shows penguin species that have different mating dances
<em><u>The reproductive isolation is the factor which allows the species to evolve and form a new species, therefore, this factor is used to describe a species.</u></em>
<em><u /></em>
<em><u>The reproductive isolation refers to a mechanism in which the species are isolated to not interbreed with the individual of other species. The reproductive isolation could be due to behavioural, psychological, physical or genetic differences. evolved as an adaptation.</u></em>
<em><u /></em>
<em><u>In the given cases, the penguin species which shows different mating dances is considered to be reproductively isolated as the different dance rituals evolved as behaviour to prevent them from mating.</u></em>
<em><u /></em>
<em><u>Thus, the selected option is correct.</u></em>
<h3>
<em><u /></em></h3>
It is a study of ECOSYSTEM and known as ECOLOGY......
Answer:
D. all of these.
Explanation:
All of these are the questions that involves ethical considerations because the method used in these questions are not doing naturally. Vitro fertilization is the fusion of woman's egg with the sperm of male outside the uterus of women which is unethical. Testing of unborn children in the womb for genetic disorders and producing genetically modify plants are also unethical because it does not occur naturally. It occurs due to intervention of humans in God's creation.
c because the elasticity of arteries allow them to expand and contain more blood in them.
Hope this helps :)
