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o-na [289]
3 years ago
8

Can someone please help me?

Biology
1 answer:
Alex Ar [27]3 years ago
5 0

Answer:

Part 1 i think, im not 100% sure

Explanation:

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9. Consider the below Punnett square cross. Explain how you could use it to determine which parent
kogti [31]

Answer: The father determines the biological sex of a baby

Explanation: Human beings have two sex chromosomes, males have XY chromosomes whereas females have XX chromosomes. During fertilization, an egg from a woman fuses with a sperm cell from a man to form a zygote. Women have two X chromosomes (XX) and any point in time they can only release an egg bearing an X chromosome but males have one X and one Y chromosome, therefore they can either release a sperm cell with an X chromosome or a sperm cell with a Y chromosome. When an egg with X-chromosome fuses with a sperm cell with an X chromosome, the resulting baby is a female but when an egg with an X chromosome fuses with a sperm cell with a Y chromosome, the resulting baby is a male.

What makes the difference in both sexes is the Y chromosome from the man, therefore the father determines the biological sex of a baby.

3 0
3 years ago
Which of the following would be considered the strongest evidence that two species are related to one another?
pychu [463]
Strongest evidence points towards shared taxon
5 0
3 years ago
3
andreev551 [17]

Answer:

c

that's the true answer

8 0
3 years ago
Eating is important to your body because molecules in food contain_________ energy that cells use to produce ATP and it also sup
oee [108]


Food molecules contain chemical energy which is released when its chemical bonds are broken.

Food undergoes  digestion in the digestive system and is broken down into its monomer units. Carbohydrates, which are the principal source of energy, are broken down into glucose. Glucose is the monomer unit of carbohydrates.

Glucose then is taken up by cells and is used in cellular respiration, which involves three main stages namely glycolysis, Krebs cycle and the electron transport chain, through which a glucose molecule is processed to form at least 36 molecules of ATP.

ATP is the form of energy that cells use.


3 0
2 years ago
Read 2 more answers
If you know that a population is 75% the dominant phenotype and 25% is the recessive phenotype, can you determine approximately
Andreyy89
If dominant allele = p, and recessive allele = q,
and p+q = 1, then:
{(p + q)}^{2}  =  {p}^{2}  + 2pq +  {q}^{2}  \\ where \:  {p}^{2}  \: is \: homozygous \: domin \\  {q}^{2}  \: is \: homozygous \: recessive \\ and \: 2pq = heterozygous
So if 75% have the p, then p^2 = homozygous dominant
{p}^{2}  =  {(.75)}^{2}  = .5625
And if the other 25% have the q, the q^2 = homozygous recessive
{q}^{2}  =  {(.25)}^{2}  = .0625
Now those remaining MUST be the heterozygous, thus 2pq are those:
2pq = 2(.75)(.25) = .375

Therefore homozygous dominant are 56.3% and heterozygous are 37.5%
8 0
3 years ago
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