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-BARSIC- [3]
3 years ago
13

PLS HELP

Biology
1 answer:
Talja [164]3 years ago
8 0
1) <span>dihybrid cross</span>  2) <span>Punnett square</span>  3) codominance  4) Multiple alleles  5) <span>incomplete dominance</span>

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2 years ago
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Answer correctly 50 Points
Natali [406]

1. The main aim of the Human Genome Project was to determine the DNA Sequence of every human gene.

2. Variation in skin colour is an example of polygenic inheritance

This Human Karyotype is unusual because it has an extra chromosome at chromosome 21.

Klinefelters syndrome is shown in the second figure

Explanation:

1. The Human Genome Project's main goal was to sequence all the 30,000 genes and 3 million base pairs in their makeup for the early detection of diseases, gene therapy and molecular level studies.

2. Human skin colour is determined by the pigment melanin. The Dominant allele is responsible for dark colours as it produces more melanin. The melanocortin 1 receptor (MC1R) gene and Tyrosinase enzyme codes for the human skin colour. Polygenic inheritance are the traits which are controlled by one or more genes.

<u>figures:</u>

<u>The extra chro</u>mosome at the 21st chromosome pairs is called trisomy 21 or Down's Syndrome. It is due to the abnormal cell division/meiosis resulting in an extra X chromosome. This leads to thechanges the in physical development of  the individual.

Klinefelter's Syndrome: There are 47 chromosomes and 2 or more X chromosomes in this syndrome of males. The resulting male suffering from Klinefelter would be sterile and have poorly developed testicles.

7 0
2 years ago
The advantage of excreting nitrogenous wastes as urea instead of ammonia is that:________ a) urea requires more water for excret
ICE Princess25 [194]

Answer: B

Explanation:

Ammonia is so toxic that it can be transported and excreted only in large volumes of very dilute solution. As a result most terrestrial animals simply don't have access to sufficient water to routine excrete ammonia.

The main advantage of urea is its very low toxicity. Animals can transport urea in the circulatory system and store it safely in high concentrations. Also much less water is loss when a given quantity of nitrogen is excreted in a concentrated solution of urea than would be in a dilute solution of ammonia.

4 0
2 years ago
ANSWER ASAP: In a population of 500 squirrels, the per capita birth rate in a particular period is 0.08and the per capita death
leva [86]

Answer:

A. -0.04

B.40

C. 60

Explanation:

.08-.12 =-.04

.08*500=40

,12*500 = 60

7 0
2 years ago
Which nutrient helps to regulate body temerature?<br>Carbohydrates<br>Minerals<br>Proteins<br>Water​
tensa zangetsu [6.8K]

Minerals would be a reasonable explanation to this scenario

My opinion is on Minerals

Answer=Minerals

7 0
3 years ago
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