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Marrrta [24]
2 years ago
10

I need help and fast with bio

Biology
1 answer:
frutty [35]2 years ago
8 0
No question no answer
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Genetic Variation:Question 8
Maurinko [17]

Answer: Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

By the end of meiosis, the resulting reproductive cells, or gametes, each have 23 genetically unique chromosomes. The overall process of meiosis produces four daughter cells from one single parent cell.

Explanation:

During meiosis, homologous chromosomes (1 from each parent) pair along their lengths. The chromosomes cross over at points called chiasma. At each chiasma, the chromosomes break and rejoin, trading some of their genes. This recombination results in genetic variation.

5 0
3 years ago
What hypothesis did Mendel formed before testing the pea plants?
IRINA_888 [86]

One gene comes from each parent for every trait. Each trait is passed from generation to generation. When gametes are formed, genes separate. If there are two unlike genes, one may be seen while the other is hidden. The inheritance of each trait is determined by units or factors that are passed on to descendants unchanged, and individual inherits one such unit from each parent for each trait, a trait may not show up in an individual but can still be passed on to the next generation and also the genes for each trait segragate themselves during gamete production.

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3 years ago
Please tell me. What is the consequences of environmental change on different species?
Mandarinka [93]

Answer:

Climate change leads to a loss of species

Global warming resulting from human emissions of greenhouse gases. The consequences include habitat loss; shifts in climatic conditions and in habitats that surpass migrational capabilities; altered competitive relationships.

Explanation:

5 0
2 years ago
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Problem: What type of energy does a toy car have when it is pushed by a child? A.heat energy B.light energy C.mechanical energy
Naily [24]
The answer would be C. mechanical energy
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What is the correct sequence of events along an axon that follows a membrane reaching threshold potential? 1. The membrane depol
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